The manga adaptation of Rose Guns Dayswas supervised by Ryukishi07 and illustrated by several artists, who differ from season to season. It first began serialization with the adaptation of Season 1 by Soichiro, which released in the September 2014 issue of Square Enix's Gangan Joker magazine. The manga was later collected into tankōbon volumes. Two spinoff series, Aishū no Cross Knifeand Fukushū wa Ōgon no Kaori, have also been released.
Yen Press has licensed the manga for official English release. Seasons 1, 2, and 3 have been released thus far.