It was announced today that Kyōsuke Kamishiro and Takayaki’s Mamahaha no Tsurego ga Moto Kano Datta light novel series is getting an anime adaptation. The announcement came from Kadokawa, but they didn’t add what the format of the anime would be nor did they add the debut date.

The story revolves around Mizuto and Yume, a former couple who enjoyed a relationship in junior high school, but became more and more irritated at each other, and used their graduation as an opportunity to break up. But on the day before entering high school, the two reunite in the most unlikely way: with their parents announcing a marriage, with Mizuto and Yume now becoming step-siblings. Wanting to prioritize their parents’ relationship, the two promise to not fool around with each other, establishing a rule where “the first one to get aroused” loses.
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Mamahaha no Tsurego ga Moto Kano Datta (My Stepmother’s Daughter Was My Ex-Girlfriend) began publishing in August 2017. Kadokawa began publishing the story in print volumes with illustrations by Takayaki in December 2018.
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