My Stepmom's Daughter Is My Ex

Synopsis

Bookish and unmotivated, Mizuto Irido, along with socially inept but kind-hearted Yume Ayai, were once a well-suited couple, united by their love for books. Their relationship, however, faltered due to their differing personalities, leading to their breakup shortly after middle school. In a twist of fate, they find themselves reunited as step-siblings. An unspoken rivalry emerges between the ex-couple, neither willing to acknowledge the other as the senior sibling. They devise a rule: the first to overstep sibling boundaries concedes defeat, allowing the victor to claim the title of older sibling and make one request. Living under the same roof, memories of their past relationship start to influence their behavior, potentially rekindling feelings that were never truly extinguished.

Background

Mamahaha no Tsurego ga Motokano datta was released on Blu-ray in three volumes from October 26, 2022 to December 21, 2022.