I KNOW EVERYTHING ABOUT KYO!!!!!!!!!!!!!!
WARNING: SPOILERS MAY BE USED!!!!!!!!!
Kyo's mother, in despair over having her son born a "monster," committed suicide by walking in front of an oncoming train (Chapter 119) when he was a young child of possibly four to six years old. His father abandoned him as well, blaming Kyo for his mother's death. People have criticized Kyo throughout his life for his differences, too frightened or never bothering to glance beyond the label of "The Cat" and regard Kyo as a true person. Like most of the Sohmas, throughout his school years, he begins to get picked on for the color of his hair but he would chase them around, threatening to kill them, which was around the time his temper began.Because of the Juunishi curse, Kyo must always wear a Juzu bead bracelet. These beads were made from the bones of a priest and warrior, and so they are a powerful protective charm. The beads themselves are alternately pale and either red (in the manga) or dark purple (in the anime), with the dark ones supposedly stained by blood. Whenever these beads are taken off his wrist, Kyo transforms into the cat's "true form", which is a beast that resembles a mutated rabbit-like form, which has a horribly foul stench that even caused Tohru to throw up. This form is a result of the Juunishi curse, and only the cat transforms into this form. The Juzu beads are handed down to the current cat of the Zodiac from the previous cat, and must always be worn. In episode 24 Kazuma Sohma takes the beads off Kyo's wrist and he turns into the cat's true form. He does this purposely in front of Tohru Honda, trying to test what Tohru truly feels for Kyo.Early in the manga it is established that of all the Sohmas suffering from the Zodiac curse it is Kyo, as the cat, who is generally the most reviled (although he is frequently viewed with pity or sometimes even uneasy acceptance rather than outright hatred, and it is implied that Kyo may be hated by certain members of the Sohma clan more than others - Akito seems to despise Kyo more than any other of the zodiac). In chapter 108 of the manga, Shigure tells Tohru that the members of the Zodiac are "monsters...disgusting creatures," and that "the existence of the cat is our salvation...He's a monster even uglier than we are, inferior to everything." He adds that the cat has an obligation to accept the fact that he will be isolated from society (essentially imprisoned for the remainder of his life), "discriminated against and looked down upon," because seeing this allows the other members of the Zodiac to feel better about themselves, at least better off than the cat.He also made a bet with Akito that he will beat Yuki before they graduate. But if Kyo doesn't beat Yuki before they graduate, Kyo will be locked in the Cat's Room for the rest of his life; if he does, then he will be accepted as a full member of the zodiac.
crying Poor Kyo-kun!!!!
But He's Still Awesome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

OMG LOOK! IT'S KYO!!!!!!!!!!!!!!!!!!!!!!!!!!!!