Seishirou Sakurazuka

A compassionate veterinarian in Tokyo Babylon, this character often joins Hokuto in playful teasing, much to Subaru's embarrassment. However, his role shifts dramatically in X Tsubasa, where he becomes a dedicated vampire hunter tracking the twins, Subaru and Kamui, through various dimensions. After sacrificing his right eye to the Witch of Dimensions, Yuuko Ichihara, he gained the ability to travel between worlds and eventually served as a vital combat mentor to Syaoran.