Yumi is the deceased heir of the Hiranguri company out for revenge.
Yumi is friendly around her friends but is merciless to her victims. When working at the maid cafe she seems to be a nice person but mostly is in the supervisor office. She sometimes acts as if she was still a high school student.
Yumi carries a long sword with her. She can absorb life energy from her victims with makes them turn to ash. She can use fire magic and has inhuman strength.
Yumi was the daughter of a big company boss. But one day on the way to school she was kidnapped by the yakuza. She was then stabbed and thrown into an empty alley. She was dead when someone found her. She then found herself in Yun with other kids her age. There they learn from powerful demons and sorcerers. 15 years later they found a spell that would get them back home. Now she seeks to cleanse the world of evil. One of her goals is to turn the daughter of the enemy against her father and adopt her as a younger sister.