is a Japanese manga series written and illustrated by Rin Miasa. It began serialization on Kodansha's Pixiv-based Palcy website and app in March 2021.
Plot Eiko Kagehara is a 29-year old introverted woman who has devoted herself to MMO gaming and is inexperienced with romance. She later meets Aren Koigakubo, a younger man who is considered handsome and successful. After a drunk encounter between the two, Koigakubo offers to teach Eiko about romance.
Publication Written and illustrated by Rin Miasa, Koigakubo-kun Stole My First Time began serialization on Kodansha's Pixiv-based Palcy website and app on March 30, 2021. Its chapters have been collected into ten volumes as of June 2026. The series is licensed digitally in North America by Kodansha USA.
Reception The series, alongside Bride of the Barrier Master, won the Women's Comic Prize at the 2024 Electronic Manga Award held by NTT Solmare.
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