Hiroshi Kawada, a student at Washimi University, was leading a busy life as a third-year student. He was trying his best to secure a good job for the sake of his cheeky yet beloved and adorable girlfriend, Nanami Miyasaka.

However, one day… when Yoriko Mizuki, who belonged to the same seminar as Hiroshi, made a move on him… the relationship between Hiroshi and Nanami began to shake.

The heartbroken Nanami was then invited by Seiya Tendo, leader of the club she is in and a popular host, to step into a host club…