My Stepmom's Daughter Is My Ex

PG-13 - Teens 13 or older

TV 23 min per ep ⭐ 6.72

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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]

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Overview:

Japanese: 継母の連れ子が元カノだった

Synonyms: My Stepsister is My Ex-Girlfriend, Tsurekano

Aired: Jul 6, 2022 to Sep 21, 2022

Premiered: Summer 2022

Duration: 23 min per ep

Status: Finished Airing

MAL Score: 6.72

Genres: Comedy Romance

Studios: Project No.9