Serie includes 4 albums .
Benikake no Sora
Benikake no Sora | Crimson-Stained Skies
Juuryokuki to Kanojo no Neko to no Seikatsu ni Oite, Futari no Kankei ni Shoujita Himegoto
Puff Puff RUSH ~ Hayai wa Tokiniha Haji ni Naru!!~