Good—for—nothing himbo Momo lacks the ability to look after himself, while Yata is a reliable but simple lug. The two get off to the worst possible start when Yata comes across Momo during a post—sex clean—up in a public restroom. Taking advantage of Yata's kindness, Momo ends up staying at his apartment. As he spends more time with Yata, the once—slovenly Momo starts to change... But in the midst of this, Momo's previous "owner" shows up.