"Your smile is so cute, so don't cry, just smile." Satoru was dumped by his live-in girlfriend right before he was about to propose to her. Leaving those words with her, Satoru ends up moving into the apartment of his college classmate, Keitaro. Two handsome, unmarried men in their 30s. There seem to be a lot of problems in their love...!? A talk of lost men's heartbreak!