[Sondake. (SoN)] Tako Musume to Tangan Musume ga XX Suru dake. [English] =Fureta7= [Digital]
[Puchimaple (Hisagi)] Kouhai Danshi ni Netorare SEX 2 [Chinese] [禁漫天堂*灰羽社汉化组] [Digital]
[Rodiura. (Rage)] Kouhai-chan ni Eroi Koto Sareru Hon 3 [Digital]
Kanojo to Boku no Kouhai no Hanashi. ch.1-4
Kouhai no Amai Ryouhou
[Terasu MC] Otaku no Boku to Iikanjidatta Kuro Gal Kouhai o Netorareru Mini
Itsumo wa Rikutsuppokute Kanjou ga Nasasou na Kouhai-chan nanoni
[Mutou Koucha] Tomodachi no Youna Otaku Kouhai to Deisui Ecchi [Digital]
Kurogyaru Kouhai Otokono Musumederihero~Gyakuanarukoosu
Natsu no hi, kouhaito, basutei de.
(C93) [Yuzuya (Yuzuha)] Kouhai Maid ga Osewa o Shite Kureru You desu (Fate/Grand Order)
Daisuki na Kouhai no Do-S na Hikaru-chan ni Mechakucha Seieki Shiboritorareru Hanashi.
Astolfo Cos no Kouhai ga Satsueikaigo ni Mousou Onanie Suru Hanashi
Josou Saserarete Futanari Kouhai Servant ni Onnanoko ni Sarechau Hon (FateGrand Order) (machine translated)
[Okunoha] Fukkou!? Ishu Kouhai -Mazoku to Ningen no Kyousei Jidai- 6-wa [English] [FC] [Digital]
Kouhai no Tangan-chan
[Kariya (Calipur)] Shitataka Kouhai-chan ni Shiboraremakutte Kekkon Suru Made no Ohanashi (Kouhen) | 被小恶魔后辈酱疯狂榨精直到结婚之前的故事(后篇) [Chinese] [甜族星人x我不看本子个人汉化]
[Saisai Saishujutsu (Papipopi)] Aotte Kuru Kouhai o Wakara Seru! (Akai Haato) [Digital]
[Akitarainu (Chakkaman)] Touhou Chara ga Doubutsu to no Akachan o Umu tame ni Kouhai Saserareru Juukan Hon (Touhou Project) [Digital]
(C93) [Yuzuya (Yuzuha)] Kouhai Maid ga Osewa o Shite Kureru You desu (Fate/Grand Order) [Chinese] [花火汉化组]
Gasshukujo no Senpai Manager-tachi to -Kyuubyoudai Chinpo no Kouhai-
[Itou Eight] Kouhai Missed Memories | Kouhai's Missed Memories (COMIC Anthurium 020 2014-12) [English] [TripleSevenScans]
Houkago no Kyoushitsu de Kouhai to Ge