[Gesho Ichiro] Yet Another Viper GTS [English]

[Shunpuutei Ichimon (DJ Lamborghini, Shunpuutei Norizou)] D3 BOSS volume 0.5 (Viper GTS, Viper CTR)

[InoIno] Viper GTS (English)

(C57) [Studio Huan (Various)] PIPER GTS (Various) [English] [Incomplete]

(SC12) [Yomosue Doukoukai (Gesho Ichirou)] THE OMNIVOUS GG2 (Various)

[Naruho-dou (Naruhodo)] Carrera-san no Ie no Katei no Jouji (Viper GTS) [English] [EHCOVE]

[Naruho-dou (Naruhodo)] Guruguru Sentou (Viper GTS) [English] [doujin-moe.us]

Viper V-2

(C57) [Circle Taihei-Tengoku (Aratamaru)] Tenshi no Yuuwaku | Angel's Seduction (NIGHT HEAD 10) (Viper GTS) [English]

(C57) [Yomosue Doukoukai (Gesho Ichirou, TYPE.90)] THE OMNIVOUS GG (Viper, To Heart)

(C50) [Yomosue Doukoukai (Gesho Ichirou)] THE OMNIVOUS X (Various)