Dosukebe Kouhai no Nenmaku Houshi Ryokan
Kouhai Sensou Zenpen
Kouhai Otokonoko to Sugosu Amai Hitotoki
Natsu no Hi, Kouhai to, Bus-tei de. | On a Summer Day, with My Kouhai, at the Bus Stop.
Senpai ni Jibun ga Mesu de Aru Koto o Wakarasareru Kouhai Zoku
Musubarenai Konin | Doomed Matrimony
(C95) [Akapenguin (Asahina Hikage)] Tawawa na Kouhai-chan 3 (Getsuyoubi no Tawawa)
Shinjin Kouhai Kiriko-san | 신입사원 키리코
(Reitaisai 10) [Maruiro Kikou (846gou)] OL Megane Yuugi to Kouhai ga Zukkon Bakkon Suru Hon (Touhou Project)
yotta daigaku no kouhai o turekonde warui koto o suru hanashi
Chaldea Shiki Seiyoku Shori System ~Kouhai to Seijo-tachi no Baai~
[Okunoha] Fukkou!? Ishu Kouhai -Mazoku to Ningen no Kyousei Jidai- 2-wa [Digital]
Bitch mo Sokuochi!? Doutei Chinpo wa Zetsurin Chinpo! Futago no Kouhai to Yarimakuri! Hamemakuri!!
Rune Midgarts no Kouhai Jikken ~Archbishop Hen~