Because he watched his brother die, then made a promise to Fei Wang Reed and King Ashura, so he would have to kill anyone who became magically stronger than he. He didn't want to so he froze his "Daddy" and fled. Yep, World's #1 Son, right there. :D
Fay D. Fluorite is a character in the popular manga/anime series Tsubasa: Reservoir Chronicle created by Clamp.
No, he doesn't. Chii is only Ashura's guardian, a Fay creation, and she looks like Fay's mother. The FayChii's date appears only in Tsubasa's anime, and CLAMP doesn't approve it - CLAMP have rejected Tsubasa's anime.
Episode 2, at Tsubasa Tokyo Revelations.
Pretty much all of them.
It is in Tokyo Revelations, episode 2.
Fay Kanin's birth name is Mitchell, Fay.
Billy Fay's birth name is William Fay.
Fay Baker's birth name is Fay Schwager.
Lyndsey Fay Macnaught goes by Fay.
Fay Holderness's birth name is MacMurray, Fay.
Laura Fay Lewis goes by L-Fay.
Fay Holden's birth name is Hammerton, Dorothy Fay.