[AB LABORATORY (NEW AB)] Aido 7 - Flash 7 (Dirty Pair Flash)
[Kuma-tan Flash! (Kumao Mofumofu)] Enkou Mor-san (Fate/Grand Order) [Digital]
[Yoshitatsu Kiichigono] Flashbang! [ENG] Hi-res
PRISMA FLASH
Slut Kitty
(Underground Carnival) [Kougeki (Ootsuki Wataru)] Speechless (Touhou Project)
Supplement
[TRAP (Urano Mami)] Honey Flash Seven (Cutey Honey F)
Dirty Light
(C87) [Yamaneko Jinja (John Inu)] Journey Into Underground (Touhou Project)
[ONEONE1 (Ahemaru)] Roshutsu Kaijin Flasher Girl ~Kyonyuu Sukeban Marimo AFTER EPISODE~
(C92) [Kuma-tan Flash! (Kumao Mofumofu)] Yamakaze no Koto, Suki? (Kantai Collection -KanColle-)
(C66) [Pon'yori Densetsu (Eririn)] Sekai no chushin de hanifurasshu | Honeyflash in Centre of the World! (Cutey Honey)
(Reitaisai 10) [Kuma-tan Flash! (Hanao.)] Rei 10 OMAKE Hon (Touhou Project)
(C69) [RED RIBBON REVENGER (Makoushi)] Valhalla ~ Dainishou~ Fuyu no Arashi (Spiral)
(C87) [Kuma-tan Flash! (Various)] Hamedori Collection (Kantai Collection -KanColle-)
[Undergroundou] Haru no Shura - Seifuku Shounen to Geshuku Daigakusei no Ikenai Kankei -
[Fractal Underground Studio] Pantsu Kuronikuru
(Reitaisai 9) [Kuma-tan Flash! (Hanao)] Shoujo Yamai (Touhou Project)
(C93) [ARCHANGEL (Ayanokouji Haruka)] PRISMA FLASH (Fate/kaleid liner Prisma Illya)
(C61) [Matsuge Club (Getsuma)] White Flash (Virtual On)
(CR20) [ALPS, Okachimentaiko Seisakushitsu (Various)] Okachimentaiko Ultra (Various)
(C45) [Meirei Denpa (Various)] Meirei Denpa Shuuchuuchiryou (Various)
[AliceComplex (Naganohara Nis)] Alice in Underground
(C45) [Monkey Reppuutai (Various)] Dengeki Monkey Reppuutai V (Various)
(Reitaisai 7) [Kuma-tan Flash! (Hanao)] Mebius:loop+Omake (Touhou Project)
Otona o Karakau n ja nai!
(CR30) [SOFTCHARM (SOFTCHARM)] FULL-SWEEP EARLY UNDERGROUND (Various)
(C95) [Ukatsu de wa Nai (noukatu, Minase Kuru)] Vtuber Sokuhame Kairaku Ochi Bon (Tsukino Mito, Deep Web Underground, Shizuka Rin) [Chinese] [homolive汉化组]
(C76) [Kazemichiya (Mamo Williams)] Flash Back (Touhou Project)
(C82) [Kuma-tan Flash! (Hanao.)] 2010-2011 Matome Bon 2 (Touhou Project)
SSSS.GRIDMAN 超全集
SSSS.DYNAZENON GRIDMAN UNIVERSE CHARACTER CONCEPT DESIGN
Ashford Gakuen Underground
(C92) [Kuma-tan Flash!, Eclipse (Kumao Mofumofu, Rougetu)] Cupla (Kantai Collection -KanColle-)
(C78) [Crazy9 (Ichitaka)] Alice in Underground (Ookami-san to Shichinin no Nakama-tachi) [English] {doujin-moe.us}
(C83) [Tricot (Stella.Ing)] From the Underground (The Legend Of Zelda)
(C61) [JUMBOMAX (Ishihara Souka)] NAJICA FLASH (Najica Blitz Tactics)
(C82) [Kuma-tan Flash!] Hanao no Mozomozo Rakugaki Chou Vol.3 (Touhou Project)
[Nawanoren (Gachoon)] NNDP 9 (Dirty Pair Flash) [2017-12-31]
Sepia Flash
Miwaku no Red Flash | Fascinating Red Flash {/u/ scanlations}
[Yukari Minemi] Chijo no Su Ore no Nikunou o Ubai Au Mesuinutachi | 痴女之巢 互相爭奪我的肉棒的牝犬們 [Chinese]
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 5 [Chinese] [沒有漢化] [Digital]
[Makita Yoshiharu] Suteki na Kyuujitsu Shinkon (Miman) Hen | A Wonderful Holiday For Newlyweds (Trouble Scramble!) [English] [Kyuukei]
Okuu to Kare no Hyouryuu Nikki
(C89) [Kuma-tan Flash!, Eclipse (Hanao., Rougetu)] Se-no! (Kantai Collection -KanColle-) [Chinese] [洨五個人漢化]
Friends Gyaku Rape Goudoushi 2
[U.M.E.Project (ukyo_rst)] ELF SLAVE CATALOG UNDERGROUND Vol.02 [Digital]
FLASHBACK (Toriko)
(C74) [Kumatan Flash! (Hanao)] Tabasa Channel (Zero no Tsukaima)
Sabbath wa Houkago, Chikashitsu de | The Sabbath happens after school, in the underground room
[Fractal Underground Studio] Himitsu no Basho | Secret Place [English] [SaHa]
(C49) [H&K (Various)] Ero Manga Kenkyuujo FIRE (Various) [Incomplete]
Alpha ga Alpha o Daku Houhou | α与α做爱的方法 1-6 完结
(Reitaisai 8) [French letter (Fujisaki Hikari)] Pedolia! underground (Touhou Project)
Underground Six
Sawari Tsukuse Manin Densha!
(C71) [Kensoh Ogawa (Fukudahda)] Ashford Gakuen Underground (Code Geass) [Chinese] [萌舞の裏組漢化] [Decensored]
ELF SLAVE CATALOG UNDERGROUND Vol.02
Omakebon 9
NOT JAP
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 4 [Digital]
Honey Flash Seven
[Wawomidasu (Kyawashuku)] Mob Zerox 3 Blue & Purple (Battle Spirits) [Digital]
Lost Desired
(Reitaisai 12) [Kuma-tan Flash! (Satetsu)] Oji-san of Scroll | Uncle of the Scrolls (Gensoukyou ni Tanetsuke Oji-san ga Yattekita YA-YA-YA) (Touhou Project) [English]
Roshutsu Wakazuma Kikiippatsu! - Flashing wives!
Watashi ga Maketara Nandemo Iu Koto Kiite Ageru
A New World Surviving, Fish Catching, Aquaculture Entrepreneuring Inseminator Uncle (Touhou Project) [English]
Albino Sakura-chan to Ama Ecchi
[Underground Campaign (Senga Migiri, jin)] Dokata Kuchiman Hole - Tobi Hen
Chuppon Onna no Vacuum Fella | 吸精淫亂女的吸引奉仕
[Zokubutsu.zip (Asuka)] Zokubutsu.zip (9) Chika | Underground [English] [Digital]
Muu Sasaki - PPG Flash
Vtuber Sokuhame Kairaku Ochi Hon
[Harazaki Takuma] SEARCH
Vtuber Sokuhame Kairaku Ochi Hon 2
(MILLION FESTIV@L 3) [Kuma-tan Flash! (Hanao.)] Masaka Idol o Yogosu Tsumori Ja Nai Desu yo ne? Dame Producer (THE IDOLM@STER MILLLION LIVE!)
Buchou to Kachou | 部长与课长 1-3
Chika 30m no Mitsugetsu o... | Honeymoon at 30 meters underground
Inbou Kyousei Kairaku Esute Zenpen | Underground Forced Pleasure Salon Part 1
(C76) [Kazemichiya (Mamo Williams)] Flash Back (Touhou Project) [English]
(C89) [CREAYUS (Rangetsu)] FLASH NOISE (CODE GEASS: Lelouch of the Rebellion)
(C48) [Studio Katsudon (Manabe Joji)] Kyouetsu Shigoku (Various)
[Cyclone] Kagami ni Mukau Shoujo (Magic Knights Rayearth)
(C87) [Kuma-tan Flash! (Hanao.)] Yuudachi/Shigure wa Maketakunai!! (Kantai Collection -KanColle-)
(C94) [Kuma-tan Flash! (Kumao Mofumofu)] Omake Book C94 (Fate/Grand Order)
[SaHa] Fractal Underground - Warm Kotatsu (English)
Hakoiri Ninja Gaiden Emaki
Chika Tougijou Sen - Underground Colosseum Sen 4
Pedolia! underground
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen [Chinese] [沒有漢化] [Digital]
(C75) [Eclipse, Kuma-tan Flash! (Rougetu, Hanao.)] Jarekko Doubutsu (Touhou Project)