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.
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 nine tankà Âbon volumes as of August 2025. The series is licensed digitally in North America by Kodansha USA.
The series, alongside Bride of the Barrier Master, won the Women's Comic Prize at the 2024 Electronic Manga Award held by NTT Solmare.