Mamahaha no Tsurego ga Motokano datta - Information; Final; Summary
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Mamahaha no Tsurego ga Motokano datta

Synopsis: Mizuto Irido and Yume Ayai, two teenagers who were once a couple in love, find themselves in an unusual situation: they are now siblings by affinity after their families were united. With the discomfort of their past feelings still fresh, they establish a peculiar rivalry by refusing to fully accept their new status as siblings. To resolve this tension, they create a game of rules, where each must avoid overstepping the boundaries of family coexistence, under the promise that the winner will be able to claim a wish. As they try to distance themselves from the past, the memories and emotions that still connect them begin to resurface, further complicating the dynamic between them and forcing them to confront how they really feel about each other.
Table of Content
- Information
- Trailer/OP
- Curiosities
- Characters
- Summary
- FAQ
- Meaning
- Related
Information
Anime Names
- Anime Name: Mamahaha no Tsurego ga Motokano datta
- Anime Name in Japanese: 継母の連れ子が元カノだった
- Anime Name in English: My Stepmom's Daughter Is My Ex
- Other names: My Stepsister is My Ex-Girlfriend, Tsurekano
Production information
- Producers: Sotsu, Pony Canyon, Movic, AT-X, KlockWorx, Asmik Ace, BS Fuji, DMM pictures, BS NTV, Kadokawa, Yomiuri Shimbun, APDREAM, Bit grooove promotion, Happinet Phantom Studios, Bergamo
- Licensors: None found, add some
- Studios: Project No.9
Anime Information
- Type: 23 min. per ep.
- Episodes: 12
- Date: Jul 6, 2022 a Sep 21, 2022
- Genres: comedy, romance
- Subjects: Others
- Target: Josei
External Links
Anime Reviews
- Rating: 6.74
- Popularity: 302,479
Video Trailer/Opening
Curiosities
- The anime "Mamahaha no Tsurego ga Motokano datta" explores the dynamics between ex-boyfriends who become step-siblings after their parents' marriage, bringing to light unusual and comedic situations.
- The series was adapted from a light novel written by Kyosuke Kamishiro, which gained significant popularity before being transformed into an anime.
- The protagonists, Mizuto Irido and Yume Ayai, set up a competition to determine who can maintain the older brother posture, adding an element of rivalry to the plot.
- The work addresses themes such as family coexistence, unresolved feelings, and the complications of past relationships that resurface in new circumstances.

Main Characters
- Irido Yume
- Irido Mizuto
- Higashira Isana
- Minami Akatsuki
- Kawanami Kogure
- Tanesato Madoka
- Irido Yuni
- Tanesato Chikuma
- Homeroom Teacher
- Madoka's Father
Summary and events
- Mizuto Irido and Yume Ayai, once a couple in love with literature, split up after their elementary school graduation.
- The two end up meeting again as stepbrothers when their parents decide to marry.
- A rivalry begins between them, as neither wants to acknowledge the other as the older brother.
- Mizuto and Yume establish a rule to define who should be the older brother: whoever crosses the line of family coexistence loses, and the winner can make a request.
- Despite the new dynamic, memories of the past and old feelings begin to resurface as they live under the same roof.
- Their daily interaction becomes a battle of pride as they try to deal with the past that is still present in their lives.
What happens in the end?
Below we have a summary of what happens at the end of the anime Mamahaha no Tsurego ga Motokano dattaWe have placed a Spoiler alert, just click below to display the content of the end of the work.
Meaning of Mamahaha no Tsurego ga Motokano datta
Let's look at the translation of each word and explanation of the anime's name:
継母の連れ子が元カノだった
- 継母 - Stepmother
- の - in
- 連れ子 - Child of the partner
- が - indicate subject
- 元 - ex
- カノ - girlfriend
- だった - was
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