Ikenai! Luna-sensei

A second-year junior-high student named Wataru Kamiya dislikes studying. After his father is transferred abroad, a college student named Luna Hazuki moves in with him as a caretaker. Luna, who also works as a part-time tutor, attempts to enroll Wataru in a cram school, but he resists. To help Wataru develop a better outlook, Luna employs an unconventional and provocative approach to capture his interest.