Yuel no Okuchi Hon
(COMIC1☆9) [Tamagohan (Dashijouyu, Saitou Miya)] Hestia-tan ga Okuchi to Oppai de Gohoushi suru Hon Set (Dungeon ni Deai o Motomeru no wa Machigatteiru Darou ka)
Shita no Okuchi de Chu Chu Shiyo
[AXZ (Kutani)] Angel's stroke 52 Okuchi Shibori 2 (Neon Genesis Evangelion) [English]
[Okuchi no Okuchi (Watari Kaoru)] Doutei ga Daikoubutsu na Onee-san ni Kuwareru. [English]
[Tomohiro Kai] Maraschino Cherry Kiss (Torokuchism) [Chinese] [無邪気漢化組]
Okuchix!
Imouto no Okuchi
Okuchi ga Koibito
[Marui Maru] Chiralism no Owari (Shita no Okuchi de Chu Chu Shiyo) [Chinese] [鬼父桑个人重嵌]
Ookina Wakatsuki-san no Ookina Okuchi
[Lunaterk] Orc Seisokuchi [Digital]
[GOD Ryokutya (Bu-chan)] Okuchi Tsukai! Precure (Mahou Tsukai PreCure!)
[Marui Maru] Shita no Okuchi de Chu ♥ Chu ♥ Shiyo | Let's Kiss With The Lower ♥ Mouth Ch.1-2 [English]
Ran-sama no Okuchi Hon
(COMITIA109) [GOD Ryokutya (Bu-chan)] Imouto no Okuchi
Ue no Okuchi to Shita no Okuchi to, Kouhen | Upper Mouth, Lower Mouth, and... Part 2
[Punipuni Doumei (Mizuki Gyokuran)] Okuchi Lovers (Lotte no Omocha!)
Mamiya no Okuchi toka Oppai toka no Hon
(C94) [Ponpokosou (Kunsei Imo)] Darjeeling-sama to Okuchinaoshi (Girls und Panzer) [Chinese] [有毒気漢化組]
Daisuki na Hikaru-chan ni Saimin o Kakete Tanetsuke Shichaou!
[Poncocchan] Osananajimi wa Ore no Senzoku Okuchi Maid [Digital]
Talk Character Okuchi Only Book
(COMIC1☆13) [Syunkan Saidaihusoku (Pony R)] Hokusai-chan ga Okuchi de Teinei ni Tannen ni Nando mo Nuite Kurete kara no Honban (Fate/Grand Order)
Okuchi Plus
Yuutou Idenshi to Rettou Idenshi ni Yoru Shussan Sareta Kodomo no Nouryokuchi Sokutei Jikken Oyobi, Mesu no Nikutai-teki Henka no Kiroku