(C81) [CRIMSON GROUND (Miyashiro Sousuke)] Erotic Crimson Plus (Shinkyoku Soukai Polyphonica)
Underground Hotel ~Cross Over~
(Underground Carnival) [Kougeki (Ootsuki Wataru)] Speechless (Touhou Project)
[Koubou Ground's (Mino Kodama)] O-neko (Darkstalkers)
Pedolia! underground
[Jishin Kajyou (GROUND)] Yami no Aikatsu Boot Camp (Aikatsu!) [Digital]
Boshi Chika Resort | Mother and Son Underground Resort
(C84) [CRIMSON GROUND (Miyashiro Sousuke)] Houmatsu Mugen (THE iDOLM@STER CINDERELLA GIRLS) [English] [WWW]
Geneki Joshidaisei to, Iyarashii Donkatsu
(C66) [Haiiro Koubou (Amano Kazumi)] GROUND ZERO (Black Lagoon)
[Shinkirou Akatsuki (Itten Chiroku)] Dememan (Haunting Ground)
[Tenma Femio] Yokkyuu Fuman no Hitozuma wa Onsen Ryokan de Hageshiku Modaeru 01-17 [Digital]
V Tsumamigui
Scathach Shishou to Celt Shiki Gachihamex!
Underground Hotel
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 4 [Digital]
(C89) [Jishin Kajyou (GROUND)] Yogosare Vampire (Aikatsu!)
[Red Ribbon Revenger (Makoushi)] Shiro (Star Ocean: Till the End of Time)
Houmatsu Mugen
Sabbath wa Houkago, Chikashitsu de | The Sabbath happens after school, in the underground room
[Underground Campaign (Senga Migiri, jin)] Dokata Kuchiman Hole - Tobi Hen
[Unknown] Chika Teien | Underground Garden [Chinese]
The Lost Haunted Tower
[Fractal Underground Studio] Kodomo Rakuen Ransel Shoujo Hen
Chika Tougijou Sen - Underground Colosseum Sen 5
(C78) [Kougeki (Ootsuki Wataru)] Pleasure Ground (Touhou Project)
[Anthology] Himitsu no Hanazono (Various)
(C64) [Tsurikichi-Doumei (Umedama Nabu)] Nan Demo-R Vol. 3 (Mahou Sensei Negima)
DWU Sennou Ryoujoku
Chuppon Onna no Vacuum Fella | 吸精淫亂女的吸引奉仕
[Nakaji Hana] melting ice love ground (RAW)
[ECO] Under Ground
(CSP6) [CRIMSON GROUND (Miyashiro Sousuke)] Mutsu Onee-chan ni Hokyuu de Bakuchin (Kantai Collection -KanColle-) [Chinese] [空気系☆漢化]
[Shinobe] Sweet Devil (PLUM FE Vol.8) [English] [BSN] [Digital]
(C94) [Okazu Company (Various)] NukiPara (PriPara)
[Shiruka Bakaudon] Uramono Zasshi No Fan Wa Yahari Orokamono De Aru | Fans of Underground Magazines are Truly Fools (COMIC Mate Legend Vol. 15 2017-05) [English] [Digital]
[Toba Yuga] Kuro Gal-chan to Haunted Love | Dark Skinned Gal-chan And The Haunted Lab (COMIC Shigekiteki SQUIRT!! Vol. 19) [English] {Doujins.com} [Digital]
[EKZ] Devil's Playground [English]
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen [Chinese] [沒有漢化] [Digital]
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 2 [Chinese] [沒有漢化] [Digital]
[CRIMSON GROUND (Miyashiro Sousuke)] Takao Onee-san no Hokyuu no Enshuu (Kantai Collection -KanColle-) [Digital]
Underground Athlete Maker
Imouto Sengen
(C78) [Crazy9 (Ichitaka)] Alice in Underground (Ookami-san to Shichinin no Nakama-tachi)
The Sarasa of Ground Zero
Hitsugi
(C74) [Nekopunch Bashibashi (Mogudan, Nyangorou)] Under Ground
Sunao ja Nai Kanojo to no Sesshikata
(Puniket 20) [Chronolog, Shoujo Zukin (Sakurazawa Izumi, Hatomugi Munmun)] Alice in the underground (Soul Eater)
Nodokan
[Gorgeous Takarada] Cannon Sensei Tobashisugi [English] [SaHa]
Onnanoko ni Yaritai Houdai
(C71) [Kensoh Ogawa (Fukudahda)] Ashford Gakuen Underground (Code Geass) [English] [0405]
(C84) [CRIMSON GROUND (Miyashiro Sousuke)] Houmatsu Mugen (THE iDOLM@STER CINDERELLA GIRLS)
(C87) [CRIMSON GROUND (Miyashiro Sousuke)] KAEDESAN MAJI GODDESS SR+ (THE IDOLM@STER CINDERELLA GIRLS)
Ash Blossom & Joyous Spring and Ghost Belle & Haunted Mansion
[Takanabe Chitose] UNDER GROUND
Haha No Kawaki | 義母的性飢渴
[Red Ribbon Revenger] Valhalla ~Joshou~ (Tokyo Underground & Spiral)
Underground arena no sen
[Mokkouyou bond] Sex Costume
[Crimson (Carmine)] Yoru no Senritsu (Tokyo Underground)