On the day she left to study abroad, she said, "Emma, I'm entrusting Yuki to you... I'm counting on you. And... when I get back, let's all three of us talk and laugh together again." After leaving, she is told by Yuki that Emma has broken down. She falls into despair over the fact that Emma was destroyed because of her, yet it is also true that a small part of her thinks, "It's not my fault."

After Hiro went abroad, she worked incredibly hard and saved Yuki. However, the bullying target shifted to Emma, and she broke down before Hiro could return. Her right eye is injured from physical violence and covered in bandages, and she has a band-aid on her left cheek. Her uniform is covered in graffiti, and her desk and bag are covered in scratches. Her eyes are lifeless, and she constantly wears a forced smile. Her facial muscles have become fixed that way.

The root of all evil. A Great Witch who blended into the human world as a childhood friend of Emma Sakuraba and Hiro Nikaido during middle school. Since Emma tried too hard and the bullying against herself stopped, she lost the means to corner Emma, which makes her seem slightly frustrated. She is good at forward rolls. Her tone is polite and formal, ending sentences with "desu ne" or "desu yo."