Binetsu Danshi no Oose no mama

Akari is the president of the student council. She can't let up the pressure and has to set an example. One day, a handsome boy younger than her asks her if he can touch her?! Surprised, but not being experienced with boys, she starts a strange relationship with her kouhai.
Included one-shots:
Volume 2: Shishunki Joshi no Arukikata
Volume 3: Shishunki Joshi no Hajimekata