Kotone was actually a sloppy person no matter how COOL she acted as a teacher at school. One day, when one of her students, Miyama-kun, asked a favor from her, she ended up staying at his house. Kotone discovered that she could be like herself when she was with Miyami. Thus, had slowly forgotten her duties as a teacher.
Sensei to Isshoni Nete? (Can You Sleep with Sensei?)
Senobashite Kisu wo Shite (A Kiss When Stretching)
Otona ni Naru Made Matte (I Will Wait for You Until You Grow Old.)
Kimi no Iru Bashou (A Place with You)