Minamoto Rui

Position of the mark: On her right breast
Curse: Forbidden to make promises
Gift: Enhanced physical strength

Rui is homeless girl who lives alone like a stray dog. The abandoned building where she lived along with all of her belongings caught on fire so Tomo took her in his apartment for shelter. She considers Tomo as her closest friend and protects him from the molesting fingers of Atori. She easily trusts people as much as she easily gets hungry.