Chika Tougijou Sen - Underground Colosseum Sen 1
(COMIC1☆5) [Kumatan Flash!] Tanoshii Miruho de Popopo~n! (Tantei Opera Milky Holmes)
[ALPS] Okachimentaiko Ultra (Escaflowne, Mobile Suit Gundam, Cutey Honey, Dirty Pair Flash, Tokimeki Memorial, Street Figher Zero, Cyber Formula)
(Reitaisai 8) [Kuma-tan Flash! (Hanao)] Except soul (Touhou Project)
(C75) [Eclipse, Kuma-tan Flash! (Rougetu, Hanao.)] Jarekko Doubutsu (Touhou Project)
[Charie] Child Resolution (Iromeki Girls) [English] [Yuri-ism]
Can't go back!
(C81) [Kuma-tan Flash!] Scapegoat Act:2 (Touhou Project)
Omake Book c94
Boshi Chika Resort | Mother and Son Underground Resort
罪世 - 第1章 | Tsumi Yo - Chapter 01 ReUpload
(C61) [JUMBOMAX (Ishihara Souka)] NAJICA FLASH (Najica Blitz Tactics)
(Hyattou Ryouran ~Kimi no Heart o Shirahadori~) [RED FLASH (Maccha)] Koinyoubou Somewake Tazuna (Touken Ranbu)
Watashi ga Maketara Nandemo Iu Koto Kiite Ageru
Hitsugi
(C74) [Jingai Makyou Club (Wing Bird)] Charaemu W BR003 FLASH BACK1985 P03 (Various)
(C71) [Kensoh Ogawa (Fukudahda)] Ashford Gakuen Underground (Code Geass) [English] [0405]
(C87) [Kuma-tan Flash! (Hanao.)] Yuudachi/Shigure wa Maketakunai!! (Kantai Collection -KanColle-)
[TRAP (Urano Mami)] Honey Flash Seven (Cutey Honey)
Underground Hotel
[Sadistic Mary (Hattori Mitsuka)] Queen Bee Honey Flash (Bleach)
(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]
Underground wrestling
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 5 [Chinese] [沒有漢化] [Digital]
Supplement
Momiji Hunter | Охотник на Момидзи
(C94) [Yatsukaan (Yatsuka Yuhata)] Minami Underground (THE IDOLM@STER CINDERELLA GIRLS)
(Reitaisai 9) [Kuma-tan Flash!, Eclipse (Hanao., Rougetu)] KUMAlipse3 (Touhou Project) [English] [q91]
(C56) [AB Normal (NEW AB)] Aido 56789 Soushuuhen (Various)
A New World Surviving, Fish Catching, Aquaculture Entrepreneuring Inseminator Uncle (Touhou Project) [English]
[Yuzunokiichi] Watashi ja Nai Watashi (COMIC Kairakuten 2018-08) [Chinese] [AL4个人汉化] [Digital]
Lost Desired
(COMIC1☆4) [Kuma-tan Flash! (Hanao)] Mokotan to Fushigina Heya (Touhou Project)
V Tsumamigui
(C71) [Kensoh Ogawa (Fukudahda)] Ashford Gakuen Underground (Code Geass) [English] [Decensored]
[AKABEi SOFT (ALPHa)] FLASH BACK 2 (Tales of Destiny 2)
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen [Digital]
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 4 [Digital]
Chika Tougijou Sen - Underground Colosseum Sen 4
(C61) [Matsuge Club (Getsuma)] White Flash (Virtual On)
(Mori no Kiseki 13) [Kuma-tan Flash! (Hanao.)] Pink Telepathy (Touhou Project)
(CR15) [Kaishaku, Project Harakiri (Various)] Kaishaku No Daihyakka Satsujin Neko Daihyakka Gundam Juugo Shuunen Kinen! (Dirty Pair Flash)
Zecchou CONTRACT
(C89) [Kuma-tan Flash! (Hanao.)] Se-no! (Kantai Collection -KanColle-) [Chinese] [洨五個人漢化]
(C74) [Kumatan Flash! (Hanao)] Tabasa Channel (Zero no Tsukaima)
(SC21) [Flash Point (Kawai Takahiro)] dancing DOLL
[ffkan]Underground Battle 5
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 3 [Digital]
[Binbi] Kanojo to Himitsu no Lingerie (Otokonoko HEAVEN Vol. 29) [English] [mysterymeat3] [Digital]
Himitsu Yuugi | 비밀유희
[sky & si-o] 罪世 - 第1章 | Tsumi Yo - Chapter 02 [EN]
i★dol翔子~FINAL FLASH~
Underground Hotel Vol. 2
Nee-sama no Inai Chinjufu
(C86) [HMA, KumatanFlash! (Hiyoshi Hana, Hanao.)] immoral (Kantai Collection -KanColle-)
Ashford Gakuen Underground
(C78) [Kuma-tan Flash! (Hanao.)] Moto Souryo no Nikuyoku Seppou - C78 Omake Bon (Touhou Project) [English] [biribiri]
Under the Table [English] [Rewrite] [EZ Rewriter]
PRISMA FLASH
(C48) [Studio Katsudon (Manabe Joji)] Kyouetsu Shigoku (Various)
[Yanagi Masashi] Kawai onna to yobaretai
(C88) [Lithium (Uchiga)] Again #2 "Flashback Memories" (God Eater) [Chinese] [无毒汉化组]
(C79) [Kuma-tan Flash! (Hanao)] Kuugeki no Sacrifice (Touhou Project)
[Fractal Underground Studio] Pantsu Kuronikuru
(Reitaisai 8) [French letter (Fujisaki Hikari)] Pedolia! underground (Touhou Project) [Chinese] [戀芙蘭催婚協會會長封獸鵺個人漢化]
Vtuber Sokuhame Kairaku Ochi Hon 2
(C90) [Kuma-tan Flash! (Hanao.)] Love Trip (Kantai Collection -KanColle-)
(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!)
Sepia Flash
FLASH BACK 20081230
(C95) [Kuma-tan Flash! (Kumao Mofumofu)] Lost Desired (Goblin Slayer)
Roshutsu Kaijin Flasher Girl ~Kyonyuu Sukeban Marimo AFTER EPISODE~
(Reitaisai 8) [French letter (Fujisaki Hikari)] Pedolia! underground (Touhou Project) [English] [MrBubbles]
(C89) [CREAYUS (Rangetsu)] FLASH NOISE (CODE GEASS: Lelouch of the Rebellion) [Chinese] [UAl汉化组]
タイムマシンにおねがい
Koinyoubou Somewake Tazuna
(C76) [Kazemichiya (Mamo Williams)] Flash Back (Touhou Project)
(C71) [ARESTICA, D.N.A.Lab. (Ariko Youichi, Miyasu Risa)] Velvet Underground (Sumomomo Momomo)
[Aizen Mana] Hagukumi-ai wa maiban komame ni ~ toshishita kareshi no 凸 seicho kiroku | 每晚都要勤勤勉勉培育愛~年下男友的凸成長紀錄~ Ch.1-2 [Chinese] [莉赛特汉化组]
[Undergroundou] Haru no Shura - Seifuku Shounen to Geshuku Daigakusei no Ikenai Kankei -
[Flash Point] P-Magic (Yaoi)
[Stapspats (Hisui)] Shinso Makou Shoujo THE COMIC White Holy Sword Rizuve and Red Flash Raiza Episode 3
[Yui Toshiki] ReYui Vol.3
Flash Noise
(C91) [Kuma-tan Flash!, Eclipse (Hanao., Rougetu)] Se-no!! (Kantai Collection -KanColle-)
(Reitaisai 10) [Kuma-tan Flash! (Hanao.)] Muishiki no Kyuuai Koudou (Touhou Project)
[Saiyazumi] Oneshota Champloo (Shukujo wa Ochinchin Busoku) [English] [flash11]
Underground Hotel Vol. 1
(C71) [Kensoh Ogawa (Fukudahda)] Ashford Gakuen Underground (Code Geass)
(C77) [Kuma-tan Flash! (Hanao)] Fairy Tale ~ Kawaii Koinu no Sodatekata ~ (Touhou Project)
Buchou to Kachou | 部长与课长 1-3
(C99) [Kuma-tan Flash! (Kumao Mofumofu)] Konya Sabishii Hinageshi wa (Fate/Grand Order)
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 3 [English] [8/u/ Scanlations] [Digital]
(C49) [H&K (Various)] Ero Manga Kenkyuujo FIRE (Various)
Underground Sex Fight Club
The Impulsive Inseminator Uncle Lost in Old Hell (Touhou Project) [English]
Friends Gyaku Rape Goudoushi 2
Enkou Mor-san
[GENOCIDE (Hattori Gorou)] S4U spats forever The UNDERGROUND insert SATONAKA CHIE (PERSONA 4) [Digital]
[AB LABORATORY (NEW AB)] Aido 7 - Flash 7 (Dirty Pair Flash)
(C97) [Shimofutaketa Zorome (Ahou Miya)] Theater Drama City (Deep Web Underground) [English] {Hennojin}
(C71) [Kensoh Ogawa (Fukudahda)] Ashford Gakuen Underground (Code Geass) [Decensored]
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 2 [English] [8/u/ Scanlations] [Digital]
(C85) [LongHornTrain (CyoCyo)] Hirameke! Megami no Love Kiss Wand | Flash! Goddess of the Love Kiss Wand (Dokidoki! Precure, Suite Precure) [English] {doujin-moe.us}
[Zokubutsu.zip (Asuka)] Zokubutsu.zip (9) Chika | Underground [English] [Digital]
(Reitaisai 12) [Kuma-tan Flash! (Nishimura Nike)] Remilia to Fushigi no HiAce | A Simmer of Remilia With a Mysterious HiAce (Touhou Project) [English]