is a Japanese manga series written and illustrated by Yuu Morikawa. It has been serialized on the Pixiv website since December 2018, with its chapters collected into seven volumes as of March 2025. An anime television series adaptation produced by Shin-Ei Animation and SynergySP aired from January to March 2024.
Written and illustrated by Yuu Morikawa, Mr. Villain's Day Off began serialization on the Pixiv website on December 15, 2018. As of March 2025, seven volumes have been released by Square Enix under its Gangan Comics Pixiv imprint. A drama CD adaptation was released by Frontier Works on January 27, 2021.
The series is published digitally in English in the global version of Square Enix's Manga Up! website. In March 2023, Square Enix Manga & Books announced that it licensed the series for print publication, with the first volume set to be released on August 15 of the same year.
An anime television series adaptation was announced in February 2023. It is produced by Shin-Ei Animation and SynergySP, and directed by Yoshinori Odaka, with scripts supervised by Midori Gotà Â, characters designed by Tomomi Shimazaki, and music composed by Nobuaki Nobusawa. The series aired from January 8 to March 25, 2024, on TV Tokyo and other networks. The opening theme song is , performed by Ivudot, and the ending theme song is , performed by Glasgow. Crunchyroll is streaming the series.