Mamahaha no Tsurego ga Motokano datta

My Stepmom's Daughter Is My Ex

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Alternative Titles

Synonyms: My Stepsister is My Ex-Girlfriend, Tsurekano
Japanese: 継母の連れ子が元カノだった
English: My Stepmom's Daughter Is My Ex
More titles


Type: TV
Episodes: 12
Status: Finished Airing
Aired: Jul 6, 2022 to Sep 21, 2022
Premiered: Summer 2022
Broadcast: Wednesdays at 21:00 (JST)
Licensors: None found, add some
Studios: Project No.9
Source: Light novel
Genres: ComedyComedy, RomanceRomance
Duration: 23 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 6.751 (scored by 130555130,555 users)
1 indicates a weighted score.
Ranked: #55532
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #854
Members: 284,537
Favorites: 1,554

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Ranked #5553Popularity #854Members 284,537
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Episodes: /12


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]


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

Episode Videos

Related Anime

Characters & Voice Actors



Opening Theme

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Amazon Music
Youtube Music
"Deneb to Spica (デネブとスピカ)" by DIALOGUE+


Aug 18, 2023
One of the best romance anime I've watched, right below kaguya sama and bunnygirl senpai.

The reason the rating is low is because of the title.( My stepmoms daughter is my ex) note: it doesn't have to do with the stepmom and step sister things you all watched on PH. In fact it doesn't have as much fan service as some other romance anime.

The story which is basically the title is a 7/10 for its originality.
The character development is a basic key in a romance story so its guaranteed to be good.

And once again if it wasn't for all the internet clowns hating on everything ...
Mar 10, 2024
Mixed Feelings
Mamahaha no tsurego ga Motokano datta or My stepmom's daughter Is my ex
It was a weird story about a boy whose dad got remarried to his middle school ex mother. The story goes through how they slowly start to get feelings for each other again and how they interact with each other in their daily life.

I gave the show 6/10

It had some interesting moments but it didn't show any originality or interesting story building.
I also fought because it didn't have an ending it took away the dramatic scene of the last episodes.

Apr 17, 2024
Starts off pretty good.
Irido and Yume are exes. However one day they find out that their single parents are getting married to each other.
So now Irido and Yume are stepsiblings living in the same house.

Irido is the emotionless one, he loves reading books, keeps to himself, and doesnt stress about most things. A really great character.
Yume is a former nerd aiming to reinvent herself as the class princess.
The two have a love hate relationship but must try to be on their best behavior to keep their parents happy. But at the same time trying to control the fact that the feelings they ...

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