[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]
[Cyclone (Izumi Kazuya, Reizei)] Kagami ni Mukau Shoujo (Various) [Digital]
Chika Tougijou Sen - Underground Colosseum Sen 5
(C92) [Kuma-tan Flash!, Eclipse (Kumao Mofumofu, Rougetu)] Cupla (Kantai Collection -KanColle-)
Straylight Porno + OMAKE BOOK C96
Triglav Underground Railway
FLASHBACK (Toriko)
(CR20) [Mengerekun (Captain Kiesel)] Daikirin (Various)
[Ribonatsu] G (Tokyo Underground)
(C88) [Lithium (Uchiga)] Again #2 "Flashback Memories" (God Eater)
(C74) [Kumatan Flash! (Hanao)] Tabasa Channel (Zero no Tsukaima)
(C92) [Kuma-tan Flash! (Kumao Mofumofu)] Yamakaze no Koto, Suki? (Kantai Collection -KanColle-)
NAJICA FLASH
[Anthology] Bishoujo Shoukougun 2000 Manga-Anime Hen 2 (Various)
[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]
Nee-sama no Inai Chinjufu
(C78) [bolze. (rit.)] The Sunshine Underground (Heart Catch Precure)
[Abura Katabura (Papipurin)] Midgar Underground Capter 1: Tifa Haidaku Nyuumetsu (Final Fantasy VII)
(C92) [Kuma-tan Flash! (Kumao Mofumofu)] Yamakaze no Koto, Suki? (Kantai Collection -KanColle-)
S to M to M to S
(C89) [Kuma-tan Flash! (Hanao.)] Se-no! (Kantai Collection -KanColle-) [Chinese] [CE家族社]
The Former Monk's Carnal Desires Sermon
(C76) [Kuma-tan Flash! (Hanao)] Tube Rose (Touhou Project)
(C85) [Kuma-tan Flash! (Hanao.)] Okuu to Kare no Hyouryuu Nikki (Touhou Project) [English]
[Korotsuke] Hitozuma Switch - Roshutsu Hen | Married Woman Switch - Flasher Chapter (COMIC HOTMiLK Koime Vol. 22) [English] {darknight} [Digital]
[AKABEi SOFT (ALPHa)] FLASH BACK 2 (Tales of Destiny 2)
Makafushigi Toumei Ojisan
(C69) [RED RIBBON REVENGER (Makoushi)] Valhalla ~ Dainishou~ Fuyu no Arashi (Spiral) [Digital]
Supplement
Chika Teien | Underground Garden
Humiliation underground
(C45) [Meirei Denpa (Various)] Meirei Denpa Shuuchuuchiryou (Various)
(Underground Carnival) [Inyu-goya (Inyucchi)] Chitei no Yakata no Aigan Shoujo (Touhou Project)
(C76) [Kazemichiya (Mamo Williams)] Flash Back (Touhou Project) [English]
Chika Tougijou Sen - Underground Colosseum Sen 4 | 지하투기장 센4
(C88) [Jagabata (Oimo)] Miwaku no Red Flash | Fascinating Red Flash (PriPara) [English] {/u/ scanlations}
Buchou to Kachou | 部长与课长 1-3
Angelical Pendulum 12 - Angel of Flashing Hunt
Nagasare Sensei
(C78) [Kuma-tan Flash! (Hanao)] Scapegoat Act: 1 (Touhou Project)
(Reitaisai 12) [Kuma-tan Flash! (Johnny)] Love & Peace o Senkyou suru Kokujin Checkera Tanetsuke Oji-san | Love & Peace Practitioner "Check It Out" Impregnator Black Man (Gensoukyou ni Tanetsuke Oji-san ga Yattekita YA-YA-YA) (Touhou Project) [English]
(C74) [Dakimakuma, Jingai Makyou Club (WING☆BIRD)] CHARA EMU W☆BR004 FLASH BACK1984 P01 (Various)
(C89) [Yamaneko Jinja (John Inu)] UNDERGROUND ASCENDANCY (Touhou Project)
[FLASH POINT] コピー本
(Reitaisai 12) [Kuma-tan Flash! (Johnny)] Love & Peace o Senkyou suru Kokujin Checkera Tanetsuke Oji-san (Gensoukyou ni Tanetsuke Oji-san ga Yattekita YA-YA-YA) (Touhou Project) [Chinese]
Hitsugi
(C77) [Kuma-tan Flash! (Hanao)] Fairy Tale ~ Kawaii Koinu no Sodatekata ~ (Touhou Project)
Underground
(C89) [CREAYUS (Rangetsu)] FLASH NOISE (CODE GEASS: Lelouch of the Rebellion)
[ONEONE1 (Ahemaru)] Roshutsu Kaijin Flasher Girl ~Kyonyuu Sukeban Marimo AFTER EPISODE~
Agata - COMIC Shingeki 2014-12 [Textless]