Norimi Kawaguchi

She is a friend of [Sawako](https://anilist.co/character/19569/Sawako-Yamanaka)'s from back when they were in high school, and they were both in the light music club together as part of the band Death Devil. She and [Sawako](https://anilist.co/character/19569/Sawako-Yamanaka) used to try to outdo each other on the guitar. Her stage name is Christina.