Tamaki Mutou  

, 武藤環

The girl who resides in the same building as Shinkurō is a university student known for her flirtatious nature. Her advances towards him are more aggressive than those of others. Although she claims to be knowledgeable about love, she does not share her own experiences because she struggles with maintaining relationships. She enjoys teaching perverted terms to Murasaki, despite Shinkurō's disapproval. Tamaki is an instructor at a karate dojo and possesses impressive fighting skills, including the ability to stop a punch with just two fingers and match Yūno in strength during full-power battles. In the anime, she is portrayed as a typical university student searching for love while also displaying her martial arts prowess.