Utsuromiya Fuyumi

A mysterious girl who finds herself in the Mental Prison to win the prize money. Brings with her ​​a doll named Chappie she considers it her only friend, in the course of the series will join the group of Meguru and Kukuri to complete the game.

Reveals Meguru and Kukuri that she is actually a male, and she thinks that she is the wrong body and that's why she hates her life and wants to win the cash prize to make a sex change operation.