Atsushi Ohkubo’s Fire Force Manga Reportedly Has 15 Million Copies In Circulation With Its 28th Volume Scheduled To Release April 16th. In Comparison Their Previous Work Soul Eater With 25 Volumes Reportedly Had 19.6 million copies in circulation as of July 2019 After Ending Serialization In August of 2013.

Source: (@MangaMoguraRE)