From Baka-Updates:Adapted from "Hada no Ue no Renai Jijou " with the following pairings: Aoki x Mizusawa; Tsukishima x Yamaji .This is a series of six. The order is:1. Hada na Ue no Renai Jijou2. Zaiaku wa Hada no Ue ni (same characters & issue but different plot)3. Zaiaku wa Hada no Ue ni-Hada no Ue ni Furu Hana*4. Renai Tsuu5. Renaitsuu-Akka-*6. Pillow Talk + Holiday*(*) indicate djs. 4 and 5 are spin-offs featuring Aoki and are contain events from Zaiaku from Aoki's perspective.6 features both couples.