Mikage, a freelancer who graduated from a low-level high school, leads an ordinary life. But one day, a handsome stranger suddenly comes to visit him with a hug, saying he's come to be his lover. Naturally, Mikage panics! The handsome stranger turns out to be Mikage's high school junior named Amatsuka. Turns out Amatsuka's back after fulfilling Mikage's "conditions for dating" that he sardonically gave Amatsuka at his graduation ceremony. Puzzled, Mikage is swept away by Amatsuka's high-intensity approach, and the two end up living together...?!