Kouhai Kanojo Tsujinaka-chan no Oshioki
【Mokugeki】Rikujoubu Kouhai ga Noshon: Hanashikaketara Tsuyoki na Taiou o Sareta
Senpai ni Jibun ga Mesu de Aru Koto o Wakarasareru Kouhai Zoku
[Otokonoko to Onnanoko (Sasaki Saki)] Akogare no Senpai ni ~Kouhai-san Honki Sex!~
(C92) [Makuu Gundan (Shinozuka Atsuto)] Ganbaru Kouhai (Fate/Grand Order)
Senpai and Kouhai + Extra
[Aimaitei (Aimaitei Umami)] Kasshoku Otokonoko DeliHeal no Erohon ~Yattekita Shimakaze-kun wa Daigaku no Charai Kouhai de――?! Hen (Kantai Collection -KanColle-) [Digital]
Shokushu Kyousei Kouhai
[AstroQube. (masha)] Kouhai no Tangan-chan #4 | Kouhai-chan the Mono-Eye Girl #4 [English] [Digital]
Senpai-kun to Kouhai-chan
[Otaku no Youjinbou (Yamaura Shou)] Invader Akumu no Jintai Jikken [Digital]
(C71) [T.N.Works | DOUWA-KENSETSU (Nomura Teruya)] NOS vol. 2 Nagato Yuki de Ooini Mousou Suru Tame no Shisaku Jikken Hon (The Melancholy of Haruhi Suzumiya)
(C86) [Rodiura. (Rage)] Kouhai-chan ni Eroi Koto sareru Hon
[Tsukemayuge (Yuzugin)] "Kouhai no Ashi o Mae ni Gaman Dekinakatta" nado to Kyoujutsu Shite Ori [Digital]
Mental Cube Jikken ni Okeru Jiko Narabi ni Higai Houkokusho
Kouhai Bon
[Gogo book (Itsutuse)] Ore to Imouto to Kouhai no Rankou Cosper (Ore no Imouto ga Konna ni Kawaii Wake ga Nai) [Digital]
(C94) [Banana Koubou (Ao Banana)] Zenra Roshutsu Haikai Onanie ni Dohamari Shita Hentai Kouhai Mash Kyrielight (Fate/Grand Order) [English] [CGrascal]
Echi Echi Kouhai-chan!
Kanojo to Boku no Kouhai no Hanashi. | 女友與我的交配淫事。
Kouhai Kanojo no Seiteki na Jikken
[Hoshino Ryuichi] Kannou Jikken
[Athome Shuka (Takunomi)] Enjo Kouhai Swimming Costume [Chinese] [Digital]
[Nishida Megane] Sousakan Saya Zombie tono Kouhai Jikken (2D Comic Magazine Muragaru Zombie ni Okasareru Heroine-tachi Vol. 2) [Digital]
[PLECO] Yokushu Shokushu ~Jikken~ (Blood+)
Takion to himitsu jikken# 1
[Egoistic Honey, Allegro Mistic, Kuroneko-kan (Hadumi Rio, Takano Yuki, Muririn)] Kouhai ni Sarechau Hon [Chinese] [佐倉七海个人翻訳] [2018-08-26]
Kouhai no Tangan-chan
[Yam] Kuroko tan de jikken manga (Toaru Kagaku no Railgun)
(C94) [Banana Koubou (Ao Banana)] Zenra Roshutsu Haikai Onanie ni Dohamari Shita Hentai Kouhai Mash Kyrielight (Fate/Grand Order)
(Reitaisai 10) [Maruiro Kikou (846gou)] OL Megane Yuugi to Kouhai ga Zukkon Bakkon Suru Hon (Touhou Project)
Enjo Kouhai 9
Fukkou!? Ishu Kouhai -Mazoku to Ningen no Kyousei Jidai- 6-wa
Boku no Mash no Kouhai Ryoku
[Akitsuki Itsuki] Tousaku Saimin Jikken [Case. 1] | Perverted Hypnosis Experiment [Case. 1] (COMIC Shingeki 2021-06) English] [Digital] {Exo Subs}
(Dai 4 Tsugi ROOT 4 to 5) [Un-moto Shoko (Un-moto)] Giji Genkai Toppa Jikken Houkokusho 01 (Fate/Grand Order)
Houkago no Kouhai
Tensai Jikken
Kouhai Maid ga Osewa o Shite Kureru You desu
(C84) [Graf Zeppelin (Ta152)] Ore no Kouhai mo Imouto mo Kanojo de Bitch de Nikudorei. (Ore no Imouto ga Konna ni Kawaii Wake ga Nai)
Watashi dake no Kouhai
(C93) [Yuzuya (Yuzuha)] Kouhai Maid ga Osewa o Shite Kureru You desu (Fate/Grand Order) [Chinese] [花火汉化组]
Saimin Application Jikken Kiroku 1
Hiken-tai E no Kouhai Jikken
(C86) [Rodiura. (Rage)] Kouhai-chan ni Eroi Koto sareru Hon [English] [Crystalium]
Koukoku no Kouhai Kono Issen ni Ari, Kakuin Issou Bokki Doryoku Seyo
(COMIC1☆7) [Hi-per Pinch (clover)] Tanoshii Kozukuri Rika Jikken no Kyoukasho (Boku wa Tomodachi ga Sukunai)
Uchi no Kouhai ga Iroiro Yuushuu Sugite Komatteru.
[Parupunte (Fukada Takushi)] Rakugaki Jikken Hon 2 (Fate/stay night)
[Nigiri Usagi] Senpai ni Jibun ga Mesu de Aru Koto o Wakarasareru Kouhai Zoku [Kouhen] | 被前輩教做人認清自己是雌性的後輩·續【後編】[Chinese] [天帝哥個人漢化]
[Chiba Tetsutarou] Wadatsumi-sama (Naedoko ni Sareta Shoujo-tachi no Ishukan Kouhai Kiroku Vol. 2) [Chinese] [翠星石汉化] [Digital]
[Rodiura. (Rage)] Kouhai-chan ni Eroi Koto Sareru Hon 3 [English] [friggo] [Digital]
(C94) [Athome Shuka (Takunomi)] Enjo Kouhai 6 [English] [biribiri]
Kouhai wa Koakumama!?
[Okunoha] Fukkou!? Ishu Kouhai -Mazoku to Ningen no Kyousei Jidai- 6-wa [English] [FC] [Digital]
[Modae Tei] DraQue Monster Joukan ~Slime Jou no Purupuru Zen Ana Kouhai~ | Dragon Quest Monster Adultery ~Slime Girl's Full Body Crossbreading~ (Dragon Quest Monsters) [English] [Digital]
[Nakamuratakumi (kemukemuke)] Chiisana Senpai to Ookina Kouhai | Small Senpai and Big Kouhai [English] [CDG Scans] [Digital]
[Studio Kyawn (Murakami Masaki, Sakaki Shigeru)] Jikken Ningyou ~FAFNER in the azure~ (Soukyuu no Fafner)
Tomodachi to Jikken Shite Miru Hon. Kouhen | A book about experimenting with your friend, part 2
Kyonyuu Sentai Sangalkan Green Hentai Mask Jikken Hen
Tomodachi to Jikken Shite Miru Hon. Zenpen
Bukatsu no kouhai wa otoko no musume
My Swim-teams's Kouhai had a Sex Change and is too Slutty