To her surprise, Mei discovers that her next-door neighbor Yuta works for a rival pharmaceutical company. To make matters worse, her colleague Kaoru arranges for Mei and Yuta to attend a matchmaking dinner together. On top of that, Mei's mother suddenly drops by to visit and Mei has to scurry to hide the fact that she has a male housekeeper!

Mei tries to stop Yuta from finding out she lives next door to him but he discovers the truth. Then, when asked if there's a man living with her, she lies and says that Nagisa-san is her father, not wanting Yuta to know she has a live-in housekeeper. Meanwhile, Kikunosuke, a doctor, starts pursuing her. Mei finally agrees to a date provided it's with a group of people. But then who should turn up but Yuta and one of Mei's female colleagues, Kaoru!