CompletedAnime

My Stepmom's Daughter Is My Ex

継母の連れ子が元カノだった

“Exes reunited as step-siblings make a rule: whoever crosses sibling boundaries loses, and the winner becomes the older sibling.”

12 episodes23 min

Comedy, RomanceSummer 2022Project No.9PG-13 - Teens 13 or older

6.71 Community score

6,681 rank349,488 viewers1,592 favorites

For you

Add My Stepmom's Daughter Is My Ex to your library

Add to library

Episodes · 12

12/12 aired

EP 01 EP 12

Watch on Crunchyroll

For you

AI-powered analysis tailored to your taste

Would you love or hate this?

Based on your preference for character-driven stories with layered emotional arcs, this title's exploration of identity and belonging would deeply resonate. The pacing mirrors series you've rated highly, and its thematic depth aligns with your appreciation for nuanced storytelling...

However, the slow initial episodes might test your patience given your history of dropping shows that don't hook you early. The art style shift in the middle arc could also be a concern...

Personalized to you
Honest pros & cons
Based on your library

Get your personal analysis

Synopsis

Exes reunited as step-siblings make a rule: whoever crosses sibling boundaries loses, and the winner becomes the older sibling.

Listless geek Mizuto Irido and introverted nerd Yume Ayai seemed like a match made in heaven, connected by their mutual love for literature. Unfortunately, their differences gradually grew, and they separated just after their middle school graduation. But, as if by divine comedy, the two find themselves reunited as step-siblings. A rivalry begins to brew between the former couple, both unwilling to acknowledge the other as the older sibling. In an attempt to "solve" this issue, Mizuto and Yume agree upon a rule: whoever crosses the boundaries of siblinghood norms loses, and the winner will not only be called the older sibling, but also get to make a request. However, now that they live under the same roof, the lingering memories they share start to influence their actions—possibly rekindling the feelings that may not have been fully extinguished in the first place.

[Written by MAL Rewrite]