M×0 (エム×ゼロ, Emu × Zero) is a Japanese manga series written and illustrated by Yasuhiro Kanō. It was serialized in Shueisha's shōnen manga magazine Weekly Shōnen Jump from May 2006 to May 2008, with its chapters collected in ten tankōbon volumes. It tells the story about a school that teaches students how to do magic and the crazy antics of a normal boy who was admitted under special circumstances.

Taiga Kuzumi, a physically capable but temperamental youth, attends an entrance interview for Seinagi Private High School (私立聖凪高校, Shiritsu Seinagi Kōkō). When asked about hypothetical magical abilities, his response of "Conquer the world" provokes laughter from a female observer. Though she later apologizes tearfully, Taiga fails the admission process and blames her interference.

While attempting to confront this girl at the school, staff mistake Taiga for a truant student and pull him through the institution's magical barrier. This unintentional entry exposes Seinagi's true purpose as an academy for magic education. Initial exposure to magical phenomena causes severe disorientation, leading to escape attempts that heighten faculty suspicions.

After physically subduing a staff member and encountering hostile upperclassmen, Taiga discovers the interview girl among the student body. His objectives shift from survival to romantic pursuit. Despite strict enrollment policies, administrators grant him admission under unique conditions - complete lack of magical capability. Taiga must now maintain the pretense of magical proficiency while navigating academic life surrounded by actual practitioners.

Written and illustrated by Yasuhiro Kanō, M×0 was serialized in Shueisha's shōnen manga magazine Weekly Shōnen Jump between May 8, 2006, and May 19, 2008. Its 99 individual chapters were collected in ten tankōbon volumes published between November 2, 2006, and August 4, 2008.