Yugai

Yugai (幽骸, Yūgai) is a spirit of a kunoichi who serves Tao Ginny as her guardian ghost.

About
Yugai is a ninpō, a Kunoichi. Not much is known about her. She first appeared in episode eight of the Shaman King anime. She reappeared differently in episode 46. In the first episode, she tries to kill Yoh, and her second appearance Ren.

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Attacks Yugai make duplicates of herself. She can team up with her duplicates to attack the opponent.

Anime/Manga Difference
Because her shaman owner Tao Ginny, was an anime-only character, Yugai does not appear in the manga series.