(C80) [Kouzaka-san, Makino Jimusho] SISTERS - Kakusareta Kioku, Natsu no Owaranai Hi (SISTERS -Natsu no Saigo no Hi-) [English] {doujin-moe.us, Fuwafuwaru}
(C83) [Kouzaka-san to Makino Jimusho (Kouzaka Kouhei)] SISTERS ～Natsu no Gensou no Hi ～ (Sisters ~Natsu no Saigo no Hi~)
(C99) [PalePink! (Sakurabe Notos, ZooTAN, Kamiken)] Jahy-sama wa Shikoranaku mo Nai! (Jahy-sama wa Kujikenai!) [Chinese]
[Luna Sensei Project (836)] Luna Sensei Project Doujinshi Vol.1 (Ikenai! Luna Sensei) [Digital]
Ikenai Runa Sensei SP
(C80) [Kouzaka-san to Makino Jimusho] SISTERS -Natsu no Owaranai Hi- (SISTERS -Natsu no Saigo no Hi-)
[Luna Sensei Project (836)] Luna Sensei Project Doujinshi Rinji Zoukan Gou (Ikenai! Luna Sensei) [Digital]
(Puniket 44) [GASOBooK!! (Matsumomo Mahiru)] Jako ga Kawaisou nano Wa Nukenai. (Jahy-sama wa Kujikenai!)
(C83) [Kouzaka-san to Makino Jimusho (Kouzaka Kouhei, Taki Minashika)] SISTERS -Natsu no Saigo no Hi- ART WORK (SISTERS -Natsu no Saigo no Hi-)
(C84) [Kouzaka-san to Makino Jimusho] SISTERS -Natsu no Haruka no Hi- + Extra Book (SISTERS -Natsu no Saigo no Hi-)
