My Stepmom's Daughter Is My Ex Season 1 Episode 1
The Former Couple Refuses to Say...
Mizuto and Yume used to date, but now they've suddenly become stepsiblings. Both of them agree that they don't want to do anything that'd disappoint their newly remarried parents. However, neither of them can accept the other as being the eldest sibling in the relationship. So they both agree to settle the matter with a game. Whoever does something in conflict with what people might consider normal sibling behavior, loses. Making them the younger sibling.
Guest Stars
Akira Kuwabara
Moderator Teacher (voice)
Miyari Nemoto
Female Student (voice)
Tasuku Kaito
Male Student (voice)
Kazuyuki Okitsu
Mineaki Irido (voice)
Ai Kayano
Yuni Irido (voice)