Chinese hentai manga by Shiwasu No Okina (Okina Keikaku)
Characters: Airi Totoki, Anastasia, Anzu Futaba, Arisu Tachibana, Chieri Ogata, Chihiro Senkawa, Fumika Sagisawa, Kaede Takagaki, Kanade Hayami, Kanako Mimura, Kaoru Ryuzaki, Karen Hojo, Kirari Moroboshi, Koume Shirasaka, Miku Maekawa, Minami Nitta, Mio Honda, Miria Akagi, Nana Abe, Nao Kamiya, Producer, Ranko Kanzaki, Riina Tada, Rika Jougasaki, Rin Shibuya, Rina Fujimoto, Sachiko Koshimizu, Sanae Katagiri, Shiki Ichinose, Shizuku Oikawa, Syoko Hoshi, Syuko Shiomi, Uzuki Shimamura