Kiriya was raised in a martial arts dojo alongside her three brothers. She bought a shoujo manga for the first time in college and was instantly hooked. But she often gets too excited reading these love stories. This leads to her breaking walls with her martial arts. She also has the habit of tossing and turning a lot in her sleep. Because of her stoic personality at school, she secretly feels pressured to set a good example around the other students.

Spoiler

After Koushi started treating her like a girl and not a tomboy, she begins to grow feelings towards him. This leads her to acting more embarrassed and girly in his presence.