The second season opening theme song is “Tsumujikaze” as performed by Sumire Morohoshi while Megumi Nakajima is on board to perform the ending theme song “Ephemera Wo Atsumete” for the show.
The first season opening theme song is “Masshiro” as performed by Sumire Morohoshi while Megumi Nakajima is on board to perform the ending theme song “Kamikazari no Tenshi” for the show.
The series began ints print run in 2015 and has seventeen volumes to date plus a manga adaptation that’s at seven volumes.
We learned way back in July 2020 that a third season has been given the green light and was already in production.