Celica Ayatsuki Mercury

Celica Ayatsuki Mercury is the younger sister of Konoe A. Mercury, and aunt of Kokonoe. She is a playable character in starting from BlazBlue: Chronophantasma Extend.

Information
Celica is Konoe's younger sister, Jubei's sister-in-law, and Kokonoe's aunt. When she was a child, Celica's mother died due to an unknown sickness and her father was always holed up in his lab. She briefly traveled with Bloodedge during the Dark War, whilst trying to find information about her father, Shūichirō Ayatsuki. After the Dark War, she watched over the Black Beast's remains and built a church, waiting for a chance to reunite with Bloodedge. She later was the foster parent of Ragna, Jin and Saya, the three of them having been entrusted to her by Jubei. She was killed by Yūki Terumi in 2192. However, in BlazBlue: Phase Shift 4, Celica touched the Old Gate in Magister's City: Ishana; this made her enter the Boundary temporarily, setting the scene for her 'revival' many years later.

She was also the previous owner of the Nox Nyctores, Deus Machina: Nirvana. At some time before Celica began caring for Ragna, Jin and Saya, she and Trinity Glassfille sealed Nirvana. Not much is known about Nirvana's time with Celica; it is only known that Celica was very close to her, and was immensely upset about sealing Nirvana, hoping that she would forgive her.

Celica's very existence is part of the Power of Order, being born solely for the purpose of resisting Seithr.

Her abnormal life force makes her immune to most, if not all, illnesses. She had never caught cold or been sick. Even when her lifespan surpassed 100 years, she looked unusually young and healthy.

Chronophantasma
Celica is brought back by Kokonoe to activate Kushinada's Lynchpin. This particular Celica is not actually the original; she is, is in fact, a kind of time-displaced duplicate called a "Chronophantasma", that Kokonoe made by making a copy of Celica's soul from a point in time where she had entered the Boundary and placing it in a cloned body. At first, Celica was ready and willing to be used to activate the Lynchpin, but when Ragna had returned from a trip to the past, he and Noel urged her to not throw her life away so easily. Kokonoe made a copy of Nirvana for Celica called Ex Machina: Minerva, which both protects her and acts as an amplifier for her powers.

Appearance
Celica is a young woman with long, auburn hair tied into a ponytail with a red ribbon, pale skin, and bright eyes that are described to be like soft, wet soil in color. She wears the standard uniform of the Mage's Guild with a red ribbon tie. The uniform itself consists of a plain, long sleeved, white shirt with golden rimming across the collar and sides, with black and gold cuffs; the shirt itself only comes down to her hips and leaves her navel exposed while keeping her hips covered. The uniform also consists of a frilled black mini-skirt with a golden line crossing it horizontally; the skirt itself barely reaches her thighs and is held in place by a small golden buckle. Finishing her look, Celica wears a standard black cape with golden lining that reaches the small of her back, and simple brown high-heels.

After the Dark War, Celica began to wear a standard nun uniform that is consistent in design to those who belong to the Roman Catholic faith. The uniform itself is a long, black, single piece dress that reaches down to her feet, the dress also has long sleeves reaching down to her wrists. The dress has a white collar and a long black veil.

Her swimsuit in Chronophantasma has her wearing a salmon pink and white two-piece bikini top with a matching very short skirt, a white bikini with two straps and brown sandals.

Personality
Celica is a kind, generous, and sociable person who deeply loves her sister and friends. She is a sentimental individual who maintains a firm stance that all life is precious and will use her healing magic to assist those in need of it, regardless of who or what they are. She is also shown to be selfless to the point that she will shield a person with her own body without any hesitation and was willing to sacrifice herself to activate Kushinada's Lynchpin, believing that her sacrifice was a small price to pay for the chance to defeat the Black Beast and save the world. She develops affection toward Bloodedge as time goes by and seems to idolize him. She had difficulty interacting with Kazuma Kval due to the uneasy feelings his presence evoked within her. It has also been noted by people (particularly Bloodedge) that she has no sense of direction, which usually ends with her getting lost.

She is also shown to be very stubborn, such as when she ignores her sister's warnings and heads to Japan by herself to search for her missing father and is also unwilling to admit that she has a poor sense of direction, leading to frequent quarrels between her and Ragna, which had once ended up with Mitsuyoshi attacking Ragna, falsely believing that he was bullying Celica as he had been trying to snatch the map from her.

She is suggested to have been in love with Ragna in the epilogue of Phase 0, where Nine and Jubei goes to her church to tell her that they wished to hold their wedding there. When Nine asks Celica about her current happiness, whether if she should have become a magician or even get married, Celica replied with her promise to Ragna, that she was willing to wait for him to return so that "she could meet him once more", "even if it will take many years, even if it will take many decades", and then she would return his sword and jacket to him, since "he had promised to come back to get it back after all". This is proven in one of the gag endings in Chronophantasma where the Spectacles of Eros is placed on Ragna once again, and Celica is shown to be unaffected, meaning that she truly loves Ragna.

Powers and Abilities
Celica has the rare ability to use healing Magic. She has been shown to heal most wounds, although she cannot use her magic to remove illnesses such as seithr poisoning. She has also exhibited the latent ability to suppress seithr, and it is for this reason that Celica is the key to Kushinada's Lynchpin, a device created to seal the seithr within the Gate, and thus disrupt the source of the Black Beast's power, although at the cost of her life. This also makes her the ultimate weakness of the Azure Grimoire as Ragna was unable to see through his right eye and move or use his Grimoire as long as he was near her. Supposedly, this would also cause an immense detriment to Terumi as he began panicking at the sight of her. However, constant use of her seithr-suppression ability can have harmful effects on Celica, even to the point of shortening her life.

Her true power is control over the flow of life. The healing powers, displayed even before she learned magic, are a manifestation of it. At the time of the Dark War, very few people were able to use it, and even fewer at her level. She is also capable of accurately feeling other peoples' presence, as she is the one that confirms that Phantom is Nine. Hakumen compares it to an intuition sharper than any logic could ever be.

Celica is also mentioned to be capable of casting quite powerful barriers or protection spells, to the point that even eight years after her death, Kokonoe herself still had a hard time entering the area around the church. Besides protection spells, Celica is also very capable of using floating Magic and Magic which can create spheres of light. She knows how to produce lightning via Magic but never actually does so as the noise generated frightens her.

Gameplay wise, Celica's Drive is Minerva in which she uses the Ex Machina: Minerva to help her fight against her opponents. Celica will heal herself and Minerva with her Overdrive, Regelite, and can use Minerva in a multitude of ways to help deal damage to her opponent.

Etymology
Celica is a Danish name that is derived from the Latin word coelica, which means heavenly or celestial. The 'A' in Celica's name is short for Ayatsuki, which has no real point of origin within the real word, and is seemingly a fictional name within the BlazBlue universe.

Mercury is much simpler in origin. It comes from the Latin Mercurius and is commonly associated with either the chemical compound, Hg, or with the Roman God Mercury (of which the compound was named after). A possible reason for this being her last name is that mercury was quite often used as a medicinal component in history. Celica's weapon, the Ex Machina: Minerva, also has etymological roots that stem from a Roman deity - Minerva; this seems to be a minor pun.

Trivia

 * In Chronophantasma's Tutorial Mode, Celica will guide the player through the section Stylish Lesson - The Basics.
 * Her birthday, September 8, shares the birth date of the Virgin Mary. Reflecting her benevolent and motherly personality
 * All of Celica's special moves and Distortion Drives are named in French and are a combination of food names/cooking terms and Middle Ages military equipment, such as Armure Sorbet (which means Armor Sherbet in French) and Arc Griller (which means Bow Grilling).
 * Celica's Astral Heat, Atout Rilletes is also in French, but it is the combination of a cooking term (Rilletes is a method of preparing meat into a state similar to a pâté) and the French term Atout, which means Trump as in a trump card or in other words, a final resort meant to turn a situation around.

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Селика А. Меркьюри