RAGNAROK SYSTEM DESPERATE DEMON LORD AND SEVEN MAIDENS GN VOL 01

Rintarou, a renowned hero who helped save Japan from being taken over by demons, has become an unconfident university student. Though he still has his incredible abilities, there's one thing he doesn't have-a girlfriend. But one day, a princess suddenly approaches him and asks to be his wife, his girlfriend... or even his friend with benefits!?