(C86) [CIRCLE ENERGY (Imaki Hitotose)] Hime Injo Jikken wa Goku-hen (Hyper-Anna)
Jikken! After School
Enjo Kouhai 10
Kouhai no Tangan-chan #5
Josou saserarete Futanari Kouhai Servant ni Onnanoko ni Sarechau Hon
(C93) [Tsukino Chikake Ikoku (Chikake)] Ore to Megami to Kouhai to (Fate/Grand Order)
Kouhai Maid ga Osewa o Shite Kureru You desu
Kawaii Kouhai ni Otosaresou | My Cute Kouhai seems to be Depressed
(C90) [AstroQube. (masha)] Kouhai no Tangan-chan #4
Koukoku no Kouhai Kono Issen ni Ari, Kakuin Issou Bokki Doryoku Seyo
Shouwaru na Kouhai ni Gyakushuu Sex! Ijimekko wa Boku no Iinari Seishori Gakari!
Fudangi ga Opai de BIKINI wa Yariman nanoka? Yoko de Taiman Jikken
Jikken Shimai Experiment Sisters
(C89) [Shimanto Seiryuu (Shimanto Youta)] Senpai-kun to Kouhai-chan
[Ichiko] Izanai (Fujun Isei Kouhai no Susume) [English] =White Symphony= [Digital]
(C90) [X ∞ MODEL (Asagiri Tendou)] Kabane Hanshoku Jikken | Kabane Breeding Experiment (Koutetsujou no Kabaneri) [English] [constantly]
Big Tits Downer Kouhai GF, Mayuki Kosaki chan
Tomodachi to Jikken Shite Miru Hon. Zenpen
[Okunoha] Fukkou!? Ishu Kouhai -Mazoku to Ningen no Kyousei Jidai- 7-wa [Digital]
(C88) [Nagiyamasugi (Nagiyama)] Hifuu Ryoujoku 4 Renko Okusuri Jikken (Touhou Project) [English] [robypoo]
[Wolf whistls] Shinkai Ranman Mayuri no Goumon Jikken-shitsu (Bleach) [Chinese] [有条色狼汉化]
Mamono Musume Oppai Shikou ~Robo Musume to Mech Master no Sakusei Jikken~
Uchi no Kouhai ga Iroiro Yuushuu Sugite Komatteru.
[Zenra QQ] Fellatio Kouhai, Otouto ni naru [English] [Yuuchen]
[Kamino Ryuuya] Kawaii x Kouhai Ch. 1 [English] {Genesis Translations}
Kouhai Missed Memories
(C70) [Parupunte (Fukada Takushi)] Rakugaki Jikken Hon (Fate/stay night)
Aotte Kuru Kouhai o Wakara Seru!
[Mda Starou] Shinjin Kouhai Kiriko-san [English] [Hentai_Doctor] [Decensored] [Digital]
Akogare no Senpai ni ~Kouhai-san Honki Sex!~
(COMIC1☆13) [Athome Shuka (Takunomi)] Enjo Kouhai 5
(C93) [Yuzuya (Yuzuha)] Kouhai Maid ga Osewa o Shite Kureru You desu (Fate/Grand Order)
NTR Kanojo ~Yandere Kouhai ni Futanari-ka Saserarete Kairaku Ochi Saserareta Onna~
Nino-san to Kaze to Yarichin Kouhai
[Maihara Matsuge] Kouhai Shidou (COMIC ANGEL Club 2011-08)
(COMIC1☆13) [Akapenguin (Asahina Hikage)] Tawawa na Kouhai-chan 2 + Tawawa na Omakebon (Getsuyoubi no Tawawa)
Senpai ni Jibun ga Mesu de Aru Koto o Wakarasareru Kouhai Zoku
Riyuu wa Fumei daga Ecchi Shite Kureru Kouhai 2
Fukkou!? Ishu Kouhai -Mazoku to Ningen no Kyousei Jidai- 3-wa
Boku wa Kouhai no Onahole
Netorarete Shunkashuutou ~Amae Jouzu na Kawaii Kouhai to no 1-nenkan~
Jibun ni dake Eroi Kao o Misete Kureru Kawaii Kouhai
Igou Jikken [ENG]
Otaku no Boku to Iikanjidatta Kuro Gal Kouhai o Netorareru Mini | A mini about black gyaru who has good feeling with the otaku me being cucked
[Sennomori Maitake] Ayakashi Kouhai Kitan ~ Onaka ni Shimi Wataru Atsui Tane ~ 1 | ~ Ghost Mating Tales ~ The Hot Seed That Penetrates Your Stomach 1 [English] [desudesu] [Digital]
Kouhai-chan ni Eroi Koto Sareru Hon 5
[Akuochisukii Kyoushitsu (Akuochisukii Sensei)] Koori no Senshi Blue Icicle Chijoku no Sennou Jikken Chuuhen [Chinese] [新桥月白日语社]
Shouganai naa Kono Hentai Uzai Kouhai
Hitokui Nezumi no Jintai Jikken
[Hanpera] Taifuu + Sake + Kouhai=♥♥♥ (Inshokukei Oneesan ga Shitaikoto) [Chinese] [黑条汉化]
(C93) [kulmov_ (Kurowa)] Kouhai Channel (Fate/Grand Order)
Do-S Kouhai no Sundome Seme
Dekkai Kouhai to Chicchai Senpai
Kanmusu Chakunin Inazuma Kyousei Ishu Kouhai
Koori no Senshi Blue Icicle Chijoku no Sennou Jikken Chuuhen
(C90) [High Tech Pen Case (Tam-U)] Kouhai Bon (Natsu) [Chinese] [绅士仓库汉化]
Senpai Kouhai a Man and Woman's Circunstances
Dekkai Kouhai ni Chicchai Senpai wa Itazura Shitai!
[MOZUKUYA (Hayasaka Natsuki)] Kaizou Jikken In Succession (Tokimeki Memorial)
Kanojo to Boku no Kouhai no Hanashi.
Kouhai no Tangan-chan #4
Kouhai Nanpa Beach Luluhawa
Shinjin Kouhai Kiriko-san
[Kashipan Koubou (Iisuto Kin)] Chuushaki to Jikkentai to Mayuri-sama ...no Jikken Teki Nichijou (Bleach)
[Neko Blizzard] Shoujo Kusuguri Jikken
Shachou no Aijin ni Sarete shimatta Kouhai no Hanashi
(COMIC1☆12) [Junpuumanpandou (Hida Tatsuo)] Uchi no Megane no Niau Tayoreru Kouhai ga Totemo Kawaii! (Fate/Grand Order)
Boku no Kouhai wa Yasashii Seijun Bitch
Kouhai-chan ni Eroi Koto Sareru Hon 6
Shoujo Kousoku Zecchou Jikken
Tanoshii Kozukuri Rika Jikken no Kyoukasho
Tomodachi no Youna Otaku Kouhai to Deisui Ecchi
Enjo Kouhai Swimming Costume
Senpai and Kouhai + Extra
Sousakan Saya Zombie tono Kouhai Jikken