[Stranger_Underground Dou] Jigoku Ezu no Yoru
]NUDEGIRL | 超裸女
[Unknown] Chika Teien | Underground Garden [Chinese]
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 5 [Chinese] [沒有漢化] [Digital]
(Reitaisai 8) [French letter (Fujisaki Hikari)] Pedolia! underground (Touhou Project)
DWU Sennou Ryoujoku
[RED RIBBON REVENGER] kuro
Minami Underground
Onnanoko ni Yaritai Houdai
(C69) [Okinawa Taieki Gunjinkai] Rynax_Underground (Kurau : Phantom Memory)
[Red Ribbon Revenger] Valhalla ~Joshou~ (Tokyo Underground & Spiral)
Chuppon Onna no Vacuum Fella | 吸精淫亂女的吸引奉仕
Hatsukoi wa Jukusei Sasete
(C69) [RED RIBBON REVENGER (Makoushi)] Valhalla ~ Dainishou~ Fuyu no Arashi (Spiral)
Underground Sex Fight Club
(C94) [Yatsukaan (Yatsuka Yuhata)] Minami Underground (THE IDOLM@STER CINDERELLA GIRLS)