[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 3 [English] [8/u/ Scanlations] [Digital]
[Explorer (Tashiro Mirika)] White Karmotorine Dream (VA-11 Hall-A: Cyberpunk Bartender Action) [Digital]
Flower Attack Moonlight
[Crimson (Carmine)] Yoru no Senritsu (Tokyo Underground)
[Abura Katabura (Papipurin)] Midgar Underground Capter 1: Tifa Haidaku Nyuumetsu (Final Fantasy VII)
Ningen wa Oroka | Humans Are Foolish
Ashford Gakuen Underground
Sofia-san wa Kashikoi ♥
(C69) [RED RIBBON REVENGER (Makoushi)] Valhalla ~ Dainishou~ Fuyu no Arashi (Spiral)
[Unknown] Chika Teien | Underground Garden [English]
Chika Seikou Tougi Club | Underground Sex Fight Club
(Underground Carnival) [Inyu-goya (Inyucchi)] Chitei no Yakata no Aigan Shoujo (Touhou Project)
[Stranger_Underground Dou] Jigoku Ezu no Yoru
Underground Athlete Maker
[Undergroundou] Seiyoku Bakuhatsu Shounen Vol. 3 -Sex Sense-
V Tsumamigui
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 5 [Chinese] [沒有漢化] [Digital]
Vtuber Sokuhame Kairaku Ochi Hon
[Bai Asuka] Boku no Kaa-san wa Yuujin no Mesuinu Ch. 1-3 [English] [biribiri]
Theater Drama City
Sabbath wa Houkago, Chikashitsu de | The Sabbath happens after school, in the underground room
Kono Watakushi ga Saimin ni Makeru Wake Arimasen wa!
土方口マンホール 鳶編
[Red Ribbon Revenger] Valhalla ~Joshou~ (Tokyo Underground & Spiral)
(Osuket 2) [UNDERGROUND CAMPAIGN (Senga Migiri, jin)] Yasei
Uramono Zasshi No Fan Wa Yahari Orokamono De Aru | Fans of Underground Magazines are Truly Fools
(C71) [Kensoh Ogawa (Fukudahda)] Ashford Gakuen Underground (Code Geass)
[RED RIBBON REVENGER (Makoushi, Takatoo Juna)] Shiro (Spiral, Tokyo Underground)
Minami Underground | 미나미 언더그라운드
[Undergroundou] Underground Natural Klutz Orgasm VI
Inbou Kyousei Kairaku Esute Zenpen | Underground Forced Pleasure Salon Part 1
(C71) [Kensoh Ogawa (Fukudahda)] Ashford Gakuen Underground (Code Geass) [English] [0405]
(C89) [Yamaneko Jinja (John Inu)] UNDERGROUND ASCENDANCY (Touhou Project)
(C71) [Kensoh Ogawa (Fukudahda)] Ashford Gakuen Underground (Code Geass) [Decensored]
[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)[Chinese] [沒有漢化]
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 2 [Digital]
Chika Tougijou Sen - Underground Colosseum Sen
Himitsu no TS Chika Kenkyuujo | Secret TS Underground Lab
Underground Hotel Vol. 3
Ashford Academy Underground
(C78) [bolze. (rit.)] The Sunshine Underground (Heart Catch Precure)
(CR30) [SOFTCHARM (SOFTCHARM)] FULL-SWEEP EARLY UNDERGROUND (Various)
Vtuber Sokuhame Kairaku Ochi Hon 2
Imouto Sengen
Kenryokusha ni Sakaraezu 2-koma Ochisuru Hon
Hitsugi
KNight Mare Underground ~Shimai Kishi, Kanraku Dungeon~ ch. 2
Chika Tougijou Sen - Underground Colosseum Sen 4 | 지하투기장 센4
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen [English] [Sexy Akiba Detectives] [Digital]
[SaHa] Fractal Underground - Warm Kotatsu (English)
USHI to KOBUSHI | 소와 주먹
[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]