is a Japanese manga series by Tetsuya Imai. It was serialized in Kodansha's manga magazine Monthly Afternoon from January to October 2011, with its chapters collected in two volumes. An anime film adaptation by Zero-G premiered in Japan in October 2022.
Written and illustrated by , Break of Dawn was serialized in Kodansha's manga magazine Monthly Afternoon from January 25 to October 25, 2011. Kodansha collected its chapters in two volumes, released respectively on June 23 and November 22, 2011.
In July 2022, Kodansha USA announced that they licensed the series for an English print release.
In March 2022, it was announced that an anime film adaptation was in production. The film was produced by Zero-G and directed by Tomoyuki Kurokawa, with Dai Satà  writing the scripts, Pomodorosa designing the characters, and Masaru Yokoyama composing the music. It premiered in Japan on October 21, 2022. The film's theme song, "Itsushika" (Before You Know It), is performed by Daichi Miura.