The original manga from Siro began back in 2011 in Comic Earth Star and has thirteen volumes released so far.
It’s now scheduled for a March 30th, 2018 release priced at 25,000 yen for the seven-volume set.
The Japanese cast includes Kana Asumi as Hinata Kuraue, Yuka Iguchi as Aoi Yukimura, Nao Tōyama as Honoka Kurosaki, Yōko Hikasa as Kaede Saitō, and Yui Ogura as Kokona Aoba.