[ground-k (Kaneda)] Kyou no Ounou (Durarara!!)
Eros & Elves
[chirarizumu] Aka to Kuro╱UNDER GROUND & Chijou no Hoshi (Gurren Lagann, Darker than Black)
[Nakamura Yukitoshi] Underground Athlete Maker (2D Comic Magazine Kikaikan Ningen Bokujou Vol. 2) [English] [Digital]
[Underground dou] Koushuu Benjo Shounen
[Black Monkey] Study Together [Chinese][水之源汉化组]
(C73) [Sadistic Mary (Hattori Mitsuka)] Study after school (Bleach)
(C70) [PNO Group (Hase Yuu, Yamamoto Ryuusuke, Hikawa Yuuki)] TH2 Chikku Factory -Xrated- (ToHeart2 Another Days)
(C74) [Nekopunch Bashibashi (Mogudan, Nyangorou)] Under Ground
(brilliant days) [nolla (Noni)] a bloom trampled on the ground 1 (Ensemble Stars!)
SStudy Ch.0-32
(C87) [CRIMSON GROUND (Miyashiro Sousuke)] KAEDESAN MAJI GODDESS SR+ (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [瓜皮汉化]
a bloom trampled on the ground 1
[Shouji Ayumu] Ecchi no Obenkyou | Sexy Studies (COMIC LO 2018-09) [English] [Doki Fansubs] [Digital]
Nodokan
[Cyclone] Kagami ni Mukau Shoujo (Magic Knights Rayearth)
[PNO Group (Hase Yuu)] Boku wa Lotte-sama no Omocha desu ga, Nani ka? (Lotte no Omocha!) [Digital]
[Jyoka] Hachishaku Hachiwa Keraku Meguri - Igyou Kaikitan
(C69) [PNO Group (Hase Yuu)] Ikunon Manga 2 (ToHeart2)
[Goban] Secret Study (COMIC HOTMILK 2014-10) [Chinese] [sakaroko个人汉化]
[Usashiro Mani] Marshmallow Study! (Digital Puni Pedo! Vol. 12) [English] {Mistvern}
Let's Study!
[UNDERGROUND CAMPAIGN (Senga Migiri, Toriki Kuuya)] Ryuuseigou ni Notte Alternative 2
Katta Kigurumi Sono Yon
Sense to Naisho no Obenkyou | A Secret Study with Sensei
[PNO Group] Nanako-chan Man Maru [JAP][C74]
Aigan Aido
[Unknown] Chika Teien | Underground Garden [English]
(C56) [Group 601 (Various)] Mahou Shoujo no Seiki (Various)
Chika Tougijou Sen - Underground Colosseum Sen 5
[BIG BOSS] Ichioku Sou Gyokusai╱Souko Sensei no Hachimitsu Jugyou (Rikujou Boueitai Mao-chan, Asagiri no Miko)
Secret Study Session 2 Nino-chan to Dokidoki Benkyoukai
Mesuryoku
Sex Study
(C80) [CRIMSON GROUND (Miyashiro Sousuke)] Itadakimasuyo, Sakuma-san. (Yondemasuyo, Azazel-san.)
(Undergroud Carnival) [Namaco's Tail (Mutenka)] KoiSato magic (Touhou Project)
Jyuai Kantsu | 수애간통
[PNO Group (Hase Yuu)] Libe-chan ga Kawaii Kattanode Tsui... (Kantai Collection -KanColle-)
[Guchokuya] Guchokuya Dai 4 Gou
(COMIC1☆11) [CRIMSON GROUND (Miyashiro Sousuke)] Sunao ja Nai Kanojo to no Sesshikata (Fate/Grand Order) [Chinese] [CE家族社]
Onee-chan no Boots-shiki Benkyouhou | Onee-chan's Boot Style Study Session
Futari no Nichiyoubi
(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]
SStudy Ch.0-36
Study With Cleavage
[Group Hinoran (Wang-Pac)] Hadaka no Hachigatsu | Naked August [English] [FishnChips]
(C84) [A.S.G Group (Misonou)] Jousenken wa Ken Janai no de Soubi Dekimasen | A Swordfish Isn't Actually a Sword, So You Can't Equip It (Dragon Quest IV) [English] [Chocolate]
(C90) [Kikyakudou (Karateka Value)] The Sarasa of Ground Zero (Granblue Fantasy)
[Hazuki] Sekka Shite Konagona ni Saretai Joshi | The Girl Who Wanted to be Petrified and Ground Up [English]
Scathach Shishou to Celt Shiki Gachihamex!
Midarezaki Kaizoku Jotei | Bloom Pirate Hooker Queen
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 3 [Digital]
Fire Emblem CG Shuu
[Miura Takehiro] BUST UP SCHOOL -Yawaraka Kigougun- | -Soft Code Group- ch. 1-4 [English] {Brolen}
(SC60) [Nuno no Ie (Moonlight)] Let's Study xxx (Love Live!)
(C83) [99mg (Coconoe Ricoco)] study room [English] {Mysterymeat3}
Pure Majo Study XXX {NecroManCr}
A Study on External Narcissism
Shishunki no Obenkyou Saishuuwa | Puberty Study Session Final Chapter
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 2 [Chinese] [沒有漢化] [Digital]
(C71) [PNO Group (Hase Yuu, Hikawa Yuuki)] TH2tic Factory -XRATED- 2 (ToHeart 2)
Fairy OO!
(C88) [Plott (Ryuuna)] Study Steady (Fire Emblem Kakusei)
各国艦娘浣腸絵集
SStudy Ch.0-44
(C84) [Nuno no Ie (Moonlight)] Let's Study xxx 2 (Love Live!)
T*MOON COMPLEX R18 Soushuuhen
Renai Katekyo + secret study
(Futaket 9.5) [serious graphics (ICE)] ICE BOXXX 12 Teron jin no Shison Sonzoku ni Kan suru Kousatsu | ICE BOXXX 12 Teron's Study of Offspring Survival (Space Battleship Yamato 2199) [English] {doujin-moe.us}
Boku no Bimama o Tomodachi ga Dakitai toiu no de Mechakucha SEX Sasete Mita
[Dayoo] Lonely Playground 1-2 [Chinese] [拾荒者汉化组] [Digital]
Fire Emblem Yorozu CG2 Shuu Chiriyuku Hana
[Crimson Comics (Carmine)] Itamashii Kioku | Heartbreaking Memory (Yu-Gi-Oh!) [English] [Doujin-World + Hentaigroup]
[Napo] Let's Study! (COMIC ExE 16) [English] [Digital]
JK o Oshiete | Please tell me "JK" 1-3
[Kaitou Pink] Iiwake Study | Excuse Study [English] [Mikakunin]
Pure Majo Study XXX | Unschuldige Zauberstunde XXX
(SC17) [Aniki Teikoku (Fey Tas)] RADIANT SILVIASAN (Rikujou Boueitai Mao-chan)
[Shirataki Shun] Karaoke Box nite (Complete)
1/10 Scale Wonderground
(C69) [Okinawa Taieki Gunjinkai] Rynax_Underground (Kurau : Phantom Memory)
[Group I.N] Bara no senshi-tachi | Fighter of Rose (Yes Precure 5)
(C88) [PNO Group (Hase Yuu, Hikawa Yuuki)] Carni☆Phan tic Factory 8 (Fate/kaleid liner Prisma Illya) [Chinese] [脸肿汉化组]
とろふわマシュまろ
Group Kaisan-go... Ochita Idol
Kouhai-chan Ki o Tsukete!
(COMIC1☆11) [CRIMSON GROUND (Miyashiro Sousuke)] Sunao ja Nai Kanojo to no Sesshikata (Fate/Grand Order)
Underground Hotel Vol. 2
Naisho no benkyou | Secret Study Time
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen 3 [English] [8/u/ Scanlations] [Digital]
ミラージュ裏日記
[Fractal Underground Studio] Himitsu no Basho | Secret Place [English] [SaHa]
[Okano Hajime] Country Study
[Group Neko (Woody)] Squeeze the Orange K-I-M-A-G-U-R-E 3D Special Edition (Kimagure Orange Road)
[Alchemy (Tekehiro)] BIRIBIRI Study (Toaru Kagaku no Railgun)
Menhera Usagi to Pet no Alpaca o Mofumofu Shichau Hon
[Yamatogawa] Benkyou Shimasenka? | Should We Study? (COMIC KOH Vol. 7) [English] {YQII}
[U.M.E.Project (ukyo_rst)] ELF SLAVE CATALOG UNDERGROUND Vol.02 [Digital]