Lunar Month

NAME: Fay D. Flourite.
ALIASES: Big Kitty; Yuui (real name).
AGE: Unknown.
GENDER: Male.
SPECIES: Human (Vampire).
OCCUPATION: Magician.
KNOWN RELATIVES: Fay (twin brother).
TITLE: Prince (former); "D".
COUNTRY OF ORIGIN: Valeria.
RESIDENCE UNTIL START OF JOURNEY: Celes.
POWERS: High-level magic, Lengthened life span.

Fay is first shown sealing away King Ashura of Celes country at the bottom of a pool. He transforms his creation Chii (originally from Chobits) into a net-like shield, instructing her to alert him if King Ashura should awake. He then uses his magic to transport himself through dimensions, to the shop of the Dimension Witch, Yuuko Ichihara.

Out of his traveling companions, Fay's motives for joining the group are the least clear. He is the only one to arrive at Yuuko's shop purposefully, by use of his own means. His wish is to never return to Celes country, but as the price for this would have been too great, he travels worlds with the group instead. He fears King Ashura's awakening, believing King Ashura would chase him through different worlds.

In "Horitsuba Gakuen", an alternate universe storyline created by CLAMP, Fay is the happy-go-lucky chemistry teacher at a prestigious private school in which Yuuko is the principal, Kurogane is the gym teacher, and Sakura and Syaoran are students. He and Yuuko frequently team up to fool and pull pranks on people, especially Kurogane, who labels them, "A demon and a witch".

Of Syaoran's group of allies, Fay is the most enigmatic. He appears to be happy-go-lucky and good-natured, and acts very carefree. He often teases Kurogane, calling him ridiculous nicknames such as "Kuro-rin" and "Kuro-pu". However, Fay has been shown to be as perceptive and skilled a fighter as Kurogane. He also appears to carry a deep emotional burden, and values his own life very little. In battle, Fay doesn't bother to fight very hard for his life, and will only do so if someone he cares for is in danger. Though he hides his unhappiness well, Kurogane is able to sense the disguise. When he confronts him about it, Fay usually gives very dark and enigmatic answers. His past is a profound motivating factor for his actions and is something Fay cannot seem to overcome; instead he masks it all with a smile.

Fay is emotionally distant, refusing to allow anyone to become too close to him. Despite this, Kurogane has noted that the mage has become attached to Syaoran and Sakura. Fay's behavior changes significantly after he becomes a vampire and is forced to regularly drink Kurogane's blood to survive. Fay becomes much colder and very solemn around everyone, and begins addressing Kurogane by his real name. However, after the events in Celes, Fay seems to have gone back to the way he was at the beginning of the series, as he once again addresses Kurogane with strange nicknames, and he seems to give a real smile.

Fay worries about his companions and would go as far as breaking his own personal vows to ensure their safety. Kurogane confronts Fay about this, and states that Fay should figure out what he's doing with his present and future, because his past has nothing to do with either Kurogane or their younger companions.

When Fay's past is finally revealed, we find out that his real name is Yuui. It is shown that "Yuui" was born in Valeria Country, with a twin named Fay. Though the birth of the second prince's son was highly anticipated, the birth of twins was considered to be a bad omen. Shortly after their birth, the second prince died, and their mother committed suicide out of guilt for giving birth to them. In addition, the country suffered many misfortunes, and the twins, when combined, bore powerful magic that rivaled that of the current king.

The king decided that making them unhappy was the only way to break the "curse", and since each refused to kill the other, they were locked up separately in a place where magic is ineffective and time does not flow: a tower residing in a deep valley. Fay was imprisoned atop the tower, and Yuui was confined at the base of the tower. Both were condemned to stay there "until the world's destruction."

Despite their unhappiness, the number of bodies dumped into the base of the tower began to grow. Yuuy tried endlessly to climb up towards Fay, so they could escape, but he did not succeed. Eventually, the king became insane, and he executed every person in the country, except for Yuui and Fay. He then jumped into the valley himself and committing suicide in front of a horrified Yuui, reminding him that their birth was the reason for the country's misfortune, and that they would now "pay for that sin" by being the only people alive in Valeria.

Eventually, Fei Wong Reed appeared from another world, and offered to free one of them. Fay chose to save Yuui, resulting in Fay being thrown from the tower to his death. Fei Wong then tampered with Yuuy's memory to make him think that Yuuy had chosen to save himself at the cost of his brother's life, allowing Fei Wong to use Yuui's guilt in order to turn him into his servant. In order to bring his twin back to life, Yuui allowed Fei Wong to bestow two curses upon him, one of which was removed from Yuui's memory. Fei Wong then told Yuui that someone would free him from the valley, and that he would have to go on a journey, protecting "a princess" (Sakura), and killing any obstacles along the way. Fei Wong then tells Yuui that when he finds a magical feather, he should put it into Fay's body to prevent it from rotting, and that he should begin his journey when he finds a second feather, which he should give to Sakura.

Later, King Ashura came to Valeria from another world in order to retrieve Yuui and took him to Celes. When Ashura asked what Yuui's name was, Yuui said it was "Fay". Ashura later gave Fay the last name "Flourite", the name of a precious talisman mineral, and he eventually earned the title 'D', given to the highest magician in Celes. And thus, Yuui became the protagonist "Fay D. Flourite". He found his two feathers while helping villagers during an avalanche, and decided to use one to create a person in his mother's image; Chii.

Ashura eventually tutored Fay in magic and comforted him whenever he felt unable to overcome his dark past. When Fay discovered that he could only learn "magic that kills people", Ashura told him that his smile held the ability to heal others. In exchange for everything that he had done for him, Ashura asked Fay to promise that he would eliminate anyone who threatened Celes.

Due to Fay's first curse, Ashura traced a magical seal on Fay's body in the form of a Phoenix tattoo, which suppressed his powers from growing any further, and though Fay protested, Ashura told him that Fay's first curse would break after it was fulfilled once, and he wanted to be the one that Fay would kill. Ashura then erased what he had told him from Fay's memory.

Several years later, a mysterious and deadly monster began to kill Celes's innocent civilians. Fay swore to defeat the beast, but found out that Ashura was the monster. Fay, at first, blamed himself for what happened to Ashura, thinking that "the curse of the twins" was what had caused Ashura to kill, but Ashura told him that his magic grows when he kills, and that he always knew that he would become a murderer, even though he was not sure why. Fay realized that Ashura had brought him under his care for the sole purpose of killing him when he reached this state. Unable to bring himself to kill Ashura, Fay cast a spell on him, putting him into a deep sleep. However, no magic spell was permanent, so the king would eventually awaken. In order to avoid having to face Ashura when he woke, Fay used his magic to teleport himself to the Dimensional Witch, where he began his journey.

Fay's greatest strength was his magical abilities. Unlike previous magic-using characters created by Clamp, Fay's magic is "written" out as he casts it, either by using a magical staff or his hand, rather than summoning a magic circle like Yuuko Ichihara, Clow Reed, and Sakura Kinomoto. The extent of Fay's power is only alluded to throughout most of the series as he refused to use it. However, he was the strongest magician in Celes prior to its destruction, and as a child, was as strong as his country's king when his magic was combined with that of his twin brother's. He is also able to fight toe-to-toe against Kurogane and Ashura while using only half his magic, as the other half of his magic was stolen by the clone of Syaoran.

Also, upon meeting Seishiro in the beginning of the series, Fay's curse which forced him to kill those with magic stronger than his own did not activate, therefore it's possible that he was stronger than Seishiro in terms of magic (before his magic was halved, then completely taken away). There also seems to be an emotional element to his magic; the stronger his emotions are, the more powerful his spells. In an emotional breakdown after he discovers that he stabbed (and presumably killed) Sakura, his magical energy alone destroys the surrounding area.

The source of Fay's magical powers are his blue eyes. Since his powers are directly connected to his eyeballs, a loss of vision leads directly to a loss of magic. His powers are effectively halved when the clone Syaoran gouges out his left eye and consumes it in Tokyo. Now, the clone Syaoran possesses half of Fay's magical powers. Fay's powers will disappear when he dies, regardless of who is in possession of his eyes. Additionally, according to Seishiro, the magic of Fay's right eye diminishes the more it is used, while that of his left eye grows stronger.

In addition to magical powers, Fay is also a strong and agile fighter able to knock back multiple opponents in battle just as easily as a Syaoran and Kurogane. Since becoming a vampire, he has also gained a healing factor as well as enhanced strength and speed. He no longer has any magic since he gave up the rest of his magic in Nihon country.

Though sworn off magic, Fay is able to sense magic passively, such as detecting barriers. For example, he detects the source of power in the castle in Hanshin, and in the Central Library of Rekord. He is also able to detect magic within people, so he knew the Syaoran he met at Yuuko's shop was a clone and that Seishiro also possessed magical powers. Fay writes off these instances of detection as 'intuition' and common knowledge for anyone with a basic understanding of magic.

In addition to various forms of offensive magic, Fay has aptitude with seals, having sealed Ashura under-water at the beginning of the series. Additionally, Fay is able to create protective barriers by whistling, as demonstrated in the group's escape from Rekord country. He later claims that magic using sound is not the type of magic that he typically uses.

Fay confesses that he is unable to use healing magic after Sakura is injured in Tokyo. Though he has tried to learn many times, he always forgets the spells afterwards. He is also able to teleport to dimensions on his own, though for most of the series, he pretends that he could only do so once. Fay has also used magic to magically seal Kurogane's sword Souhi into his left hand, saying that if Mokona is not around or if they are separated, he could take it out of his hand in the same fashion as the real Syaoran.

Fay's magic is powerful enough to slow his aging process; however, according to his behaviour there are no reasons to suggest that Fay is much older than he looks. He was supposed to die if he were to lose all his magic as his life itself depends on it but later he was spared from this effect due to vampire blood.

Fei Wang Reed had placed two curses on Fay, however, he is now free of both these curses.

The first curse causes him to kill anyone possessing greater magical power than himself; this curse activates automatically, leaving Fay in a trance-like state and powerless to control his own actions. The curse is activated when Sakura gains two more feathers in the Infinity arc, but she saves herself by using a robot she had won to transport herself to another dimension. Since this curse can only be fulfilled once, it has now been broken.

The memory of the second curse was erased from Fay's memory because Fei Wong felt that he had "no need to remember it". This curse is activated when somebody other than Fay kills Ashura. Later, it is revealed that the second curse is that he would use his magic to suck up the world of Celes and trap everyone inside.