Shizuru is encouraged by Kaoru and Takako, who she meets at a class reunion, to join the "Second Wives Club," a club for celebrities, but it turns out to be a gathering of stepmothers who enjoy swapping their stepsons.
| Actor | Role |
|---|---|
| YYurika MizusawaShizuru Ozaki | Shizuru Ozaki |
 Yuya MatsuuraKei | Kei |
 Yumika HayashiKaoru Enjoji | Kaoru Enjoji |
 Hotaru HazukiTakako Saegusa | Takako Saegusa |
 Seiji NakamitsuKyoichi | Kyoichi |
| TTeruo OkaShosuke | Shosuke |