Mei becomes curious about Nagisa-san's past. But her housekeeper remains tightlipped about anything to do with his private life, which remains shrouded in mystery. After all other means fail, Mei decides to follow him after he leaves her house to see where he goes, and she discovers a side of Nagisa-san couldn't have imagined. Meanwhile, Yuta begins to have nagging doubts about whether Nagisa-san is really Mei's father…

Nagisa-san becomes visibly troubled after seeing a woman at Mei's workplace and starts having accidents in the kitchen and other mishaps. Concerned that something is bothering him, Mei finally gets Nagisa-san to open up about his secret past. Meanwhile, Mei and Yuta, aware of their strong feelings for each another, have a series of awkward encounters. Then, frustrated at not being able to take their relationship to the next level, Yuta does something drastic and unexpected…

Yuta becomes convinced that Nagisa-san isn't really Mei's father when he witnesses them sharing an unguarded moment. Mei realizes that it might be time to reveal the secret she's been keeping from Yuta all this time. Meanwhile, Nagisa-san is taken aback when Mei's sister, Yui, tells him that he might have to stop working for Mei.