The digital edition of the March 2019 issue of Kodansha’s Monthly Shonen Magazine began serializing a spin-off manga of Hiroki Yagami’s Dear Boys Act 4 manga on February 6, 2019. The manga, titled Dear Boys Shōnan Dai Sagami Special Selection, will only be available in the digital edition of the magazine. The story is set two years before the story of Dear Boys Act 4, when Ayumi Fuse was still a first-year high school student.
Yagami launched the Dear Boys Act 4 manga in Monthly Shonen Magazine in October 2018.
Yagami launched the first Dear Boys manga in 1989 and ended it in 1997. The series has 40 million copies in print. The Dear Boys: The Early Days prequel manga followed from February to May 1997. Yagami launched the sequel manga Dear Boys Act II in 1997 and ended it in 2008. The sequel won the Kodansha Manga Award for shōnen manga in 2007. Yagami launched Dear Boys Act 3 in December 2008 and ended it in December 2015.
Yagami launched the Dear Boys Overtime sequel manga in Monthly Shonen Magazine in February 2016, and ended it in January 2017. Kodansha shipped the third and final compiled volume in February 2017.