(CSP6) Nyancology 4 -Usami-san To Himitsu no Hokenshitsu- | Nyancology 4 -Usami-san And The Secret School Infirmary
(C90) Nyancology 5 -Usami-san to Himitsu no Misshitsu- | Nyancology 5 -Usami-san And The Secret Room-
(C91) Oya ni Naisho no Iedex - Fuyuyasumi no Toode Hen | Running Away From Home Sex We'll Keep Secret From Our Parents - Winter Break Trip Edition