Rikka Hishikawa 菱川六花

While she is kind and usually calm-minded, Rikka can be bluntly stern and she's not afraid to speak her mind. She strives to lead a quiet school life but is often dragged into various things by Mana, and as her childhood friend she feels obligated to look out for her and keep her out of trouble.

Rikka enjoys things like studying and is one of the top ten scoring students in the national trial exams. Rikka is at the top of the class and constantly placed as the first place in her school, however, if she becomes distracted by other things, like a current hobby, her grades are shown to suffer.