Sansha Sanyou: Serina Nishiyama

Classmate of Futaba and Teru, and friend of Asako. She is exceeded by Teru in many aspects, such as the grading in study, and the competition for the position of class representative, thus she sees Teru as her main rival; but she always becomes a victim of Teru's haraguroi personality in their confrontations. She loves cute little animals, like Teru. Her cat is named Eternal because she wishes it to live a long life, as her previous cat has died