The April 2018 issue of Shinchosha’s Monthly Comic @Bunch magazine has announced that Junya Inoue’s BTOOOM! manga is inspiring a spin-off that will debut in the next issue in March 2018. Yūya Kanzaki is drawing the series titled BTOOOM! U-18. Inoue’s main BTOOOM! manga will also end in the May 2018 issue of the magazine.
Inoue launched the original series in Shinchosha’s Weekly Comic Bunch magazine in 2009, and then transferred it to Monthly Comic @Bunch in 2011. Yen Press is publishing the manga in English.