is a Japanese manga series written and illustrated by Yuu Saiki. It has been serialized in Kodansha's manga magazine Bessatsu Friend since September 2019. A live-action film adaptation premiered in Japanese theaters in June 2026.
Characters
Homeroom Teacher
Yamaguchi's grandfather
Yamaguchi's grandmother
Media Manga Written and illustrated by Yuu Saiki, Yamaguchi-kun Isn't So Bad started in Kodansha's manga magazine Bessatsu Friend on September 13, 2019. The manga went on hiatus in June 2022 due to Saiki's childbirth, and resumed on July 13, 2023. Kodansha has collected its chapters into individual volumes. The first volume was released on January 10, 2020. As of June 12, 2026, thirteen volumes have been released.
In July 2021, Kodansha USA announced that they have licensed the manga for English digital release in North America.
Volumes
Live-action film A live-action film adaptation was announced on December 6, 2025. It will be produced by Asmik Ace and directed by Saiji Yakumo, with Natsuko Takahashi writing the script and Kōji Endō composing the music. Asmik Ace distributed the film and premiered in Japanese theaters on June 5, 2026. The theme song is "Be My Baby" performed by Naniwa Danshi.
Reception The series was among the top five manga in the women's category of s Electronic Comic Awards 2022.
References
External links