Celestial Spirits/Gemini

Gemini (ジェミニ, Jemini), "The Twins" (双子宮 Sōshikyū), or Gemi and Mini are Celestial Spirits that are one of the 12 Golden Zodiac Keys. Their key is currently owned by Arthur Moshiyoto.

Appearance
Gemini takes the appearance of two human teens with blond hair and blue eyes. Gemi has unruly hair while Mini has straight hair cut at the shoulders. Gemi always has a frown, while Mini always has a smile. Gemi and Mini also wear the same outfit, consisting of a white robe with a yellow edge that covers their torso. Gemi wears long pants reaching all the way down to his ankles, while Mini wears a short white skirt. They also wear boots with thick heels that are the same color as the edge of their robes.

Personality
Depending on the Mage they're contracted with, they undergo personality changes to reflect said Mage's personality. While under an unknown dark mage, they were sadistic, cruel, and clearly enjoyed tormenting other people like she did. However, they had a change of heart when they heard Arthur's thoughts of compassion towards his spirits, as well as his principle of treating them as equals.

Gemi and Mini are generally shown to be very joyful Spirits. While waiting for orders, they dance and make various poses. They don't seem to be very shy, and have no problems exposing some of Arthur's secrets to his enemies.

Magic and Abilities
Light Magic (光の魔法, Hikari no Mahō): Light Magic is a Caster Magic which draws on the positive emotions of the user and manifest it in a physical form, the element of Light. Light Magic gives off a feeling of hope to the user's allies which in turn inspires them to do better in combat due to this magic releasing the benevolent nature of the user back into the world.

It should be noted that Light Magic was intentionally created to be used as a counter against Darkness Magic and later Black Arts, two types of Magic that feed on negativity and cause massive destruction. This is triggered by going by the opposite of the 'magic = feelings' concept—by fueling their magic with positive feelings, the user is capable of initiating the usual fusion of eternano and magical power, only manifesting magical power in a light and benevolent nature; this is known as natural Light Magic, drawing from the inner feelings of the humanity to purify the world off all its evils and mistakes, like a beacon of hope. This version of light magic is more commonly known and used by Legal Mages as they are often encouraged to use their emotions when it comes to fighting, being taught it will increase the overall power of their spells, though this is just a rumor and has not yet been official confirmed.

However a recent discovery has just been made revolving around Light Magic; a group of scientist have discovered a new way to utilize Light Magic without having to go through the process of converting their own feelings into magic. This is considered incredibly difficult for a mage to successfully pull off and as such, there are only a small number of Mages that are capable of using this method of Light Magic. To do this, the user will manifest and modify their very eternano and magical energy, entwining it, into that of protons which the user can then alter the movement of them, allowing them to be able to use virtually any light based power; being granted the ability to control, generate, and absorb light as well as utilizing said element as a form of offense and defense. Users of, what has now been dubbed, natural Light Magic have taken note that the light that is manifested through this specific procedure is not capable of being sense as it does not have any feeling in it, making most mages feel uncomfortable around a mage that is capable of using this variation of Light Magic. Due to this fact that this Light Magic does not use any emotion and is based on science, this variant of the magic has been named artificial Light Magic. It has been rumored that more and more Dark Mages are gaining the ability to use this form of Light Magic, disguising themselves and spying on Legal Guilds.

Light Magic can be utilized in a multitude of different ways, ranging from offensive to supplementary applications. Occasionally, a certain technique will usually involve the use of hands to cast a spell, though an experienced user can preform said spell without having to go through such an approach. It can be used to destroy and pick up various objects, defend various enemies' attacks and unleash devastating beams of light with immense power behind them. Light Magic can also be used in the most basic way possible which can still lead devastating results; by emitting light from the caster's body, depending on the brightness and the heat that the light emits, it is capable of blinding as well as burning an opponent or causing the surrounding area to explode in a brilliant light. The user can create constructs and weapons made of the element, and even teleport themselves away via transforming into light; being capable of taking out a horde of opponents in a flash of light and rendering them unable to fight, blinding them with radiance. Similar to other elemental magics, Light Magic allows the user to transform their entire body into the very element that they use to fight: by transforming into pure light, the user is able to negate and avoid attacks, and gain the added advantage of traveling at incredible speeds and causing significant damage to their opponent and everything that they come in contact with, like a ray of divine light coming to unleash its judgment. Heavenly Body Magic (天体魔法, Tentai Mahō) is a unique form of Caster Magic that allows the user to utilize stellar energy as well as various astronomical objects. It is an incredibly powerful and rare form of Magic as it requires a immense amount of control over one's magic. This is an important factor as to utilize this magic the user must be able to siphon their own magical power into the atmosphere in order to create the primary energy of Heavenly Body Magic, which is commonly known as stellar energy. However, this cannot be achieved normally as the user must use a special body suit that allows their magic to properly siphon with the Ethernano around them. This unique form of energy allows the user to draw on the power of various astronomical objects such as meteor and constellations as well as simply generating and manipulating the energy of the stars from their body. The user can embody the astronomical objects that they are conjure, being able to enhance their physical capabilities to new heights. The generated stellar energy can be manipulated in a wide variety of ways, its "type" can be changed at will, and they can even be given a somehow material consistency. When used for offense, Heavenly Body Magic can take the form of a sphere-like object that can be ejected at the opponent or as a beam that can be blasted. Light can also be emitted from the user's body; depending on the brightness or heat that the light emits, it can be capable enough to blind an enemy or cause the surroundings to explode.
 * Light Shield (遮光体, Shakō-tai): After moving her hands at high speeds in front of her in a circular clockwise motion, the trail of light left behind becomes solid, acting as a semi-transparent radiating shield capable of blocking several basic or one 'special' attack. The more power is put in the shield, the stronger the shield gets. If she pulls her hands back, the shield will slowly start to dissolve and fall apart, leaving her unprotected.
 * Light Blast (光ブラースト, Hikari Buraasuto): By slowly moving her right arm in a clockwise motion, several small glowing spheres appear at the tip of her fingers. After pointing them towards the target, the spheres detach and fly towards the target at amazing speeds. They will not stop until they hit the target or an inert surface. The Spheres then merge once reaching the target and explode, releasing an enormous amount of light and heat.
 * Blinding Light (まばゆいばかりの光, Mabayui bakari no hikari) Collecting photons from the surrounding area, Mini focuses them upon her entire body, resulting in it glowing a radiant white light, capable of blinding her enemies. This grants her the opportunity to attack or flee.
 * Australis (極光 Kyokkō) : Mini finely weaves light particles around himself until it creates an aura of light surrounding her. Once this is complete, she is able to manipulate the particles of light as she so wishes, making them into any shape he desires. She can turn it into a spherical shield of light, to defend against attacks from all directions. She can manipulate the light to create an illusion or even send parts off to attack, like threads of light. All of this contributes to make a highly versatile spell.
 * Three Lights Strategy (三光作戦, Sankō Sakusen) is a Light Magic spell that collects magical energy in the form of a small sphere near the ground, at which the user simply has to wave their hand. At this point, the light magic erupts as three rows of grinding light that can shatter the earth and cause great damage to a collective if they do not evade properly and in time. Because of the speed of the spell, this is also very difficult to achieve.
 * Star Lily (姫百合, Himeyuri): Star Lily is a very potent Light Magic spell. Through manipulating light particles, the user is able to enhance every single cell in their body with Light Eternano, causing their body to take upon an aura of pure light around it. This in turn increases their physical abilities extremely, capable of instantaneously traversing distances in a matter of seconds, leaving a white trail behind them after every movement.
 * Helios (ヘリオス, Heriosu) is a Caster-type Light Magic spell. Due to the simplicity of the spell, and the easy customization it affords, it's considered a staple in the arsenal of fighters who lack talent at learning complex spells. To form Helios, the user gathers their own magical energy, imposing their will on it and crafting it into the shape of a sphere. Immense and powerful rotation is added to the sphere, creating a swirling vortex of magical energy encased in an outer shell to contain the eddy of magical energy. Forming Helios is often likened to holding the sun in the palm of ones' hand. Through the rotation of incredibly dense magical energy, the sphere's contact with a human body creates a powerful and extremely painful 'shredding' effect on the body, ripping into target at the point of contact and in the case of targets with durable skin, it causes intense internal damage. One of the key points of Helios is how easy it is to change on the fly; by changing the volume of magical energy used to form the sphere, the size can be enhanced to create truly gargantuan spheroids. The power of Helios also depends on the amount of energy that creates the cyclone held within the sphere; larger amounts of magical energy create stronger 'drills', so to speak, while weaker amounts of magical energy do little more than rattle a target. Skilled users, in addition to modifying the size, can also modify the quantity; sufficient control over the rotation of the magical energy allows a user to manifest Helios in both hands, and wield is flawlessly. This effect is referred to as Twin Suns (二つの太陽!!, Futatsu no Taiyō, due to the image created from wielded Helios in this manner.
 * Milky Way (天の川, Amanogawa): Mini weaves light particles into a single, extremely potent whip, which possesses exceedingly high cutting power. Though fragile, the user is able to regenerate it through use of Light Magic. Mini has shown the ability to effortlessly cut through most substances through this spell, and can even manipulate its structure enough to make it hold his opponents and tie them in a rope of sorts.

Heavenly Body Magic can also be manifested for multiple usage in defense, and it boosts the user's melee performance, empowering their physical attacks with wakes of destructive light. The stellar energy can also be employed in other ways, with the user being capable of emitting it in vast amounts, enough to cover a wide area, and of shaping it into various forms. The user has used the stellar energy in inventive ways, such as jets of light, whirling disks, and blades of light. They often manipulated light using only two fingers, rather than with a closed fist or open hand as was commonly used by other elemental users; and the user also has the ability to produce a greater amount of light than any other light mage to exist without tiring, as they are shown to be able to maintain successive assaults for long durations of time. The user is also extremely accurate with their blasts of light; and the user has demonstrated the ability to condense the stellar energy, enabling the stellar energy to cut clean through various objects. When formed into spheres of light, the light serves to be rather concussive, able to firmly pulverize objects, such as stone. The user is able to generate powerful shields of swirling light which could withstand the full force of four simultaneous elemental attacks; and they are even able to charge up their light before releasing it, resulting in a far more powerful attack.

This light is not the only substance used, however. The caster is also capable of using the power of gravity against the opponent for destructive usage; the strength can be comparable to the effects caused by a crushing meteor; as the user is able to freely increase or decrease the amount of gravity in the area around them with devastating effects. By applying this gravitational power to incoming enemy attacks, the user is capable of rendering them harmless by dragging them down to the ground. Gravity can be used to lift objects, even gigantic ones, and people alike, and to move them around in the air; in addition, when concentrated around a single opponent, it can cause the latter great pain. This function is powerful enough for the user to shake a house and completely alter the surrounding area with a light touch of their hand, and a minimal amount of it, let out from the user's body, can prevent falling rain from even coming in contact with them. It also allows the user to alter the gravity of a person, either themselves or someone else. The user can lower the target's gravity, enabling them to walk on walls, or raise the target's gravity, rendering them incapable of moving, additionally utilizing it in order to enhance their speed and movement to enable them to dart around the battlefield with ease, allowing the user to attack with impunity.

Masters of this magic are able to draw on the magical power from the celestial bodies to the mortal plane of Earth Land. This allows single ability allows users to access a unique set of spell that are known as  True Heavenly Body Magic (真・天体魔法, Shin Tentai Mahō) as they are literally drawing from the energy from astronomical plane that was thought to be outside the reach of humanity. This specific form of Heavenly Body Magic allows the user to draw on physically manifest the astronomical object that they draw on and utilize it to their command.
 * Stellar Energy Absorption: Gemini are, like most Heavenly Body Magic users, capable of absorbing stellar energy either via the stars themselves or through other mages' Heavenly Body Magic Spells. Additionally, due to the unique way Gemini gained mastery over such magic, Gemini can freely convert Celestial Energy into Stellar Energy to additionally boost their spells' power
 * Meteor (流星 Ryūsei): Geminis' body is surrounded by magic that manifests itself as a bright golden light instantly leaps off of him and then yanks back around their body. Gemini is surrounded by a slight, golden outline of a glow; that seems to be literally smoking with light. Upon moving, Gemini leaves wispy trails of golden stardust behind him. This is a technique that all users of Heavenly Body must master, said to allow the caster to fly as fast as a comet, and hit with the force of a meteor. The trails of stardust left behind by the user, especially through the air make this a very dazzling spell to witness.
 * Altairis (暗黒の楽園 Ankoku no Rakuen lit. Dark Paradise): Gemini raise one or two hands above their heads as a huge chasm of space opens and begins to whirl; a Black Hole the size of a truck spins into existence within 2 seconds; crackling with spatial energy. Gemini then choose their target; and flings the giant spatial distortion at their opponent(s). As it travels, it sucks up any objects that aren't weighed down as they are gone forever; yanked into the depths of space from which the Black Hole came. Any person or lifeform caught up in the pull of it and whirl around the Black Hole soaring through the air until it explodes in a wave of knockback energy and they are tossed out. So far, Gemini hasn't used this ability during an actual battle, due to its latent destructive potential.
 * Grand Chariot (七星剣 Shichi Seiken lit. Seven Star Sword): Gemini supercharge themselves with starlight in less than a second; and rockets off into the skies above. Night drops over the area for a brief moment; as stars above begin to illuminate with an unnatural gold color. Like pinball, Gemini begin to ping from star to star; drawing a design into the stars. They seems to speed up after about ten seconds; the pings becoming extremely rapid until they finally rockets back to the ground in a huge burst of starlight and gravity. Pointing two fingers up to the skies they bring the peace sign down into an open palm, 7 fingers; he activates the old Heavenly Body Magics of Grand Chariot. The starlight design he has drawn in the heavens comes to life; shining to an apex until they blast down with one train sized blast of starlight from 7 different stars that rocket directly downward from each star like a golden satellite ray. When they hit the ground; the huge rays of light slide together and create a huge 200ft explosion. The spell's name is derived from the Big Dipper.
 * Black Holes' Gates: Gemini wave their hand, throw one of them in front of themselves, or concentrates. A split moment later a huge black hole big enough to drive a bus through whirls open in front of him and begins pulling everything toward it. 2 Seconds later; another black hole opens and drops the target(s) out in a different position, up to 100 ft away from Gemini or in any direction they desire. The Black Holes are very loud and displace both sound and space. This technique allows Gemini to absorb and nullify incoming damage for the duration of the spell. In addition, the two act as a pair of portal, allowing Gemini to use them as a form of transportation.
 * Shooting Star: Gemini raise one hand, or both at the same time. Or throws a palm out towards an opponent as a small blast of starlight rockets from their hands. The blasts are golden colored lasers that bounce a few times if Gemini miss their target. Gemini can fire multiple blasts if they wants to rapid fire, as well. The blasts explode into small clouds of golden stardust upon impact that can easily disorient vision. They can be used to chain blast someone, stacking quite an amount of damage. The blasts can bounce around a room ricochet style. Each blast can bounce twice before exploding. The blasts have a high pitched sound which can be disturbing and disorienting.
 * Cygnus' Wings (白鳥の翼, Hakuchō no tsubasa):
 * Corona (光環, Kōkan):
 * Denebola's Glow (尻尾の輝き, Shippo no kagayaki):
 * Orion's Blessing (狩人の祝福, Kariudo no shukufuku):
 * Saturn's Rings (土星の環, Dosei no wa):
 * Aurora Australis (南極光, Nankyokukō):
 * Milky Way (天の川, Amanogawa):
 * Capella (カペ, Kapera): Accordingly to it's title, 'Capella' absorbs energy from the twin stars Capella B and Capella A. Gemini close both their eyes and cross both arms in front of their chest, palms out and fingers apart, each hand must also be just an inch away from each ear. Two seals will appear on both palms (not the back of the hand), the left one should be flipped upside-down, while on the right side it must be as is. These seals will quickly become two glowing disks of light-energy, roughly 5 inches in diameter. At the same moment, the casters close both hands, later creating a throwing motion towards the opponent, the left hand must be on top of the right, since that disk will be the first one to be released, followed by the right one. Upon opening their fists, the disks are fired at amazing speeds towards Geminis' desired target.
 * Pulsar D (パルサー, Parusā): The basic form of a Pulsar spell; Pulsars are known for their electromagnetic radiation and their fast-paced interval period times. This spell uses that force and converts it to a useful navigating system. The proper position in this spell requires the users' left hand bending softly against their head, creating an arch with the hand limp as possible. The right should be pointed at the direction where the users wish to go, a finger pointing exactly into that direction whilst the other four fingers stay limp. A seal should appear against the pointing finger, roughly the same size as the users' hand. The said seal keeps levitating after removing their hand. Once removed, Gemini must then forcefully push both hands against the seal, which will later rotate opposite of its current direction. A blast of electric blue energy should radiate from the seal, traveling for about a kilometer. This does not, in any way, affect any form of life that it passes through. The Pulsar D blast can be considered invisible to everyone else other than the magesr the process of reaching its maximum distance, the blast will manually direct itself back towards the seal at the same level of speed, containing every detail of the place it pressed through. The seal will remain intact until after the information is taken up by the hand of a Heaven Body mage. The necessary schemes of the place will immediately be implanted into his/her mind once the user places a hand over the seal.
 * True Heavenly Body Magic: Sema (真・天体魔法　星崩し Shin Tentai Mahō Sēma) Gemini bow down and point their hands downwards, with all the fingers closed except the index and middle fingers. They then begin to slowly move their right hands until they points upwards, causing the clouds above them to begin circling, creating what appears to be a cyclone. From the center of the swirling formation, a glowing orb begins to form, growing in size until a humongous meteor emerges, falling quickly to earth towards the intended target. When the meteor hits, the force is strong enough to create a large explosion, which engulfs a wide area and releases a strong hurricane of air, also leaving a large crater in its wake.

Darkness Magic (闇の魔法 Yami no Mahō): Darkness Magic is a Caster Magic which draws on the negative emotions of the user and manifest it in a physical form, the element of Darkness. While Darkness Magic is not inheritably evil in a sense, it does give off a feeling of despair to opponents that fight against a user of this magic due this magic releasing the malefic nature of the opponent out into the world. This Magic allows the user to utilize destructive abilities; it is triggered by going by the opposite of the 'magic = feelings' concept—by fuelling their magic with negative feelings, the user is capable of initiating the usual fusion of eternano and magical power, only manifesting magical power in a dark and malefic nature; this is known as Darkness Magic.

With this type of magic, the user has absolute dominance over the element of shadows; and thus, darkness, night, and any dark-related elements. This Magic has a physical form used for destroying objects, blocking enemies' attacks and picking up objects; consistently, it is a pulsating crimson. When using it, the user more often than not shapes their attacks into the form of waves or arcs of shadows, which they can use in various ways. The shadows can be channeled to a variety of effects, both as an absence of light and a solid substance: one can also control and manipulate the beings that exist there, create and dispel shields and areas of total darkness, create a variety of constructs and weapons and, teleport themselves through massive distances via shadows; being able to take out multiple opponents with just one attack and capture people, sinking them into the depths of their shadow.
 * Dark Force: Gemi is able to move a target in any desired manner. By moving his hand in the direction he wants it to move, he blows the target away as if he was giving them a smack from a short distance. This will seemingly produce an invisible, powerful blunt attack to strike the target.
 * Dark Grab: Gemi moves his hands towards the opponent, far away from them. This will prompt a pair of strong, dark-coloured arms to appear from a nearby surface and grab the opponent, immobilizing or choking them according to the movements performed by the user, who, after grabbing the target, are seemingly capable of controlling the spell with a single hand. In the anime, the spell instead takes the form of a large amount of red glyphs, which surround the opponent, swirling around them and then grabbing them. Such glyphs can lift the target in the air and near them to the user.
 * Dark Mass: Gemi creates a growing sphere of Darkness Magic with the face of Ksitigarbha inside it. After being shot at the target, the sphere turns into many tentacles, that, despite their apparent weightlessness and translucency, are quite heavy.
 * Dark Ray: Gemi shoots a powerful ray of darkness from his hand towards the enemy. As simple as that.
 * Dark Cage: Gemi creates a sphere darkness Magic in his hand in the form of ghosts that revolve around the center. The user then shoots it at the target, releasing several ghosts that wrap around the target, restraining its movement. A variation of this spell is when Gemi crushes a different-looking sphere in his hand, summoning several small masses of darkness Magic which then grow and come together to create a sphere around the target, restraining its movement and dealing pain.

Equipment
Gemini don't seem to have any possessions, making them magic-oriented combat spirits.

Gate of the Twins Key (の鍵 双, Futago no kagi): The Gate of the Twins Key is one of the famous twelve Golden Zodiac Keys, this one in particular represents the Twins, Gemini. The key is depicted to be an ordinary golden key with the crest of the Twins, a symbol similar to two I's merged, stamped on its bow. The bow of the key is sculpted with two heads, each one of them representing a twin, Gemi and Mini, two circular faces with two dots for eyes and boomerang-shaped mouths, one in a smile while the other one in a frown. The sides of the bow feature an arm from each of the twins protruding. The blade of the key is depicted to be a harph, representing Harmony between the two. A Celestial Spirit Mage is capable of summoning the Twins by holding the key in front of them while chanting "Open, Gate of the Twins!". As a result, numerous golden spheres erupt from the tip of the key, forming two figures, Gemi and Mini. Gemi is a young man, roughly 20 years old wearing goth-like outfits and is specializing in Darkness Magic, while Mini is a girl, around the same age, always wearing cheerful colours and is specializing in Light Magic. The two are able to perform a unison raid, combining their magics in every aspect for powerful blows capable of destroying anything in their path.

Trivia

 * This is the author's interpretation of the said spirit and as such, it differs from Lucy Heartfilia's Gemini.