『Hiiragi Kashima』

Age: 17

Height: 175cm

Birthday: August 8

Mafuyu's chilhood friend alongside Yuki and Shizusumi. They went to the same middle school, but currently just he and Shizumisu attend to the same preparatory.

Since they were younger, he was closer with Shizu. He usually shows a strong personality and has a rough speech, but internally he worries a lot for Mafuyu and is glad when he can get in touch with him again.