平井鏡太郎

"Yes. Don't hesitate to ask me anything on that matter.....via Utashiro."

— A student who carefully peruses, reads and rereads his books.

He is a third-year senior at Daiichi High School, the same school as Tobari. He is a serious and hardworking person, but he hates to lose and is not good at getting involved with others. He is introduced as a "friend" by Tobari, but Kyoutarou himself seems to have mixed feelings about it.

Likes: Literature, Black coffee
Dislikes: Tilling rice fields, Easy-going people