(C90) [KINOKONOMI (konomi)] Nyancology 5 -Usami-san to Himitsu no Misshitsu- | Nyancology 5 -Usami-san And The Secret Room- [English] {Doujins.com}

(C85) [KINOKONOMI (konomi)] Nyancology 2 -Nekota-san to Himitsu no Asa Jijou- | Nyancology 2 -Nekota-san's Secret Morning Affairs- [English] [Doujins.com]

(COMIC1☆13) [KINOKONOMI (konomi)] Nyancology 7 -Kitsunegawa Kon to Himitsu no Kenkyujo- [Chinese] [绅士仓库汉化]

(Mimiket 28) [KINOKONOMI (konomi)] Nyancology -Kaettekita Nekota-san no Himitsu- | Nyancology -Homecoming Nekota-san's Secret- [English] [Doujins.com]

(CSP6) [KINOKONOMI (konomi)] Nyancology 4 -Usami-san To Himitsu no Hokenshitsu- | Nyancology 4 -Usami-san And The Secret School Infirmary [English] {Doujins.com}

(Mimiket 30) [Kinokonomi (konomi)] Nyancology 3 -Nekota-san to Houkago Kakurenbo- | Nyancology 3 -After School Hide and Seek With A Catgirl- [English] [Doujins.com]

(C90) [KINOKONOMI (konomi)] Nyancology 5 -Usami-san to Himitsu no Misshitsu- [Chinese] [绅士仓库汉化]

(C90) [KINOKONOMI (konomi)] Nyancology 5 -Usami-san to Himitsu no Misshitsu-

(COMIC1☆13) [KINOKONOMI (konomi)] Nyancology 7 -Kitsunegawa Kon to Himitsu no Kenkyujo-

(Mimiket 28) [KINOKONOMI (konomi)] Nyancology -Kaettekita Nekota-san no Himitsu- | Nyancology - Homecoming Nekota-san's Secret [English] {Doujins.com}