Ikenai! Runa Sensei: Yasashiku muitene hen

Wataru Kamiya, a boy who lives with his father after losing his mother. Suddenly, his father left home for a while on a business trip abroad, and decided to live with Luna Hazuki, a female college student, as a boarder. I'm a lazy person who can't study or exercise, and if I'm interested, it's just naughty.