1第 1 集
Miki's parents decide to get a divorce and swap partners with the couple they met while on vacation. The couple's son Yuu is attractive but strange.
2第 2 集
Miki panics as Yuu almost reveals the family secret during an interview at school. Her childhood friend Ginta gets annoyed at Yuu's presence.
3第 3 集
Miki keeps thinking about the mysterious girl next to Yuu in the photo she accidentally found. Yuu and Miki go on a semi-date to a theme park.
4第 4 集
Miki gets upset with Ginta for kissing her. When she spots Yuu's ex-girlfriend Arimi at the school gate, she uses her to get away from Ginta.
5第 5 集
Ginta's confession only serves to frighten his crush. Yuu makes a fool of Ginta, then upsets him even further when he walks into the house after Miki.
6第 6 集
Yuu agrees to keep quiet after discovering Meiko's secret. Ginta's cousin Tsutomu shows up to participate in a tennis game at his school.
7第 7 集
Miki joins Yuu and Ginta after getting separated from her group during the school trip. Arimi asks Ginta to pretend to like her to make Miki jealous.
8第 8 集
Miki and Yuu's parents throw a barbecue to celebrate their children's safe return. Miki gets angry when her father suggests going on a family outing.
9第 9 集
While helping Yuu at his part-time job, Miki realizes that he has many admirers. Ginta, Arimi and Tsutomu all show up at the store and cause drama.
10第 10 集
Miki and Yuu spend a day shopping and eating together when they get the house all to themselves while their parents go on vacation.