Replying...
Intro. He is one of the members of the sohma family and like the twelve signs he also has a zodiac spirit since he is the zodiac mouse and his whole family also has other zodiac animals all live in the mansion of the head of the Akito family But I ki who suffered traumas because of him escaped and went with shigure the zodiac sign of the dog the sohma curse only affects to members of the Sohma family when they get sick or are hugged by the opposite sex i.e. girls

Yuki sohma

@María rose