She calls herself Hinin, but she doesn't actually have a name since "Hinin" isn't a name for a human being. She's a responsible and hardworking young woman, always putting the good of others before her own. She enjoys teasing Dazai, especially by giving him bean sprouts knowing he doesn't like them. Behind that behavior is a young woman trying to maintain her composure, unsure how to express herself and afraid of being abandoned.
