My Stepmom's Daughter Is My Ex Light Novel Ends at Volume 14
The official X account for Kyosuke Kamishiro and illustrator Takayaki's My Stepmom's Daughter Is My Ex (Mamahaha no Tsurego ga Moto Kano Datta) announced on Wednesday that the light novel series will end with its 14th volume, scheduled for release on December 1, 2026. Kamishiro began the story on the Kakuyomu website in August 2017, and Kadokawa started print publication with Takayaki's illustrations in December 2018. The 13th volume shipped in October 2025. Rei Kusakabe's manga adaptation has run on Kadokawa's ComicWalker since December 2019, with Udon Entertainment handling the English manga license and J-Novel Club holding the light novel license. The novels follow Mizuto Irido and Yume Ayai, former middle school partners who become stepsiblings after their parents remarry. An anime adaptation aired on AT-X and Tokyo MX in July 2022, with Crunchyroll streaming it as it aired.