Hiiragi Mio

The younger sister of Miki Hiiragi, Shiraba Academy's Board Chairman.

She is serious and has a strong sense of responsibility, and because she is the younger sister of the Board Chairman, she tends to give off a prickly first impression. However, when you talk to her in person, she treats everyone equally, regardless of gender.

She is an ordinary, cheerful girl, albeit also having a bit of an airheaded side. Since entering Shiraba Academy, she has been living in a dormitory away from her parents. She's also is bewildered by the school's integration because she thought she would become the president of Shiraba Academy in the future.

"I like this school. That's all."