(C48) [Raijinkai (Haruki GeNia)] Jintoku No Kenkyuu 1
[Oishii Udon (Ocza)] Kenkyuu Seika (Atsumare Fushigi Kenkyuubu)
[Kuromahou Kenkyuujo (Nukaji)] Shinyuu wa Imouto no Kareshi [Digital]
[Ninnindo (Tonsuke)] N Zukan ~Fellatio Hen~ (Various)
[Nyoninka Kenkyuujo (milda7)] Onna ni Sareta Yuusha Rya
Rika no Kenkyuushitsu Report Ch. 1-2
(C70) [Matsumoto Drill Kenkyuujo (Naganoon)] Tamani wa nai no mo ii janai | How About Nai Once In A While? (Utawarerumono) [English] [EHT] [Decensored]
Clijo AV Kenkyuukai
(C86) [Minori Kenkyuujo (Minori Kenshirou)] Roshutsu Joshi
[Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Kamikirimushi [English]
(C73) [Tsurupeta Kenkyuusho (Various)] Tsurupeta Kenkyuu Houkokusho "Tsurupeta Kyoudan no Yabou " - Turupeta Recearch Report
(AC2) [Kinokonomi (konomi)] Nyancology 10 -Usami-san to Himitsu no Kenkyuu Seikatsu-
Camera Conscious Fellatio Sluts
[Majime Niikite.] Kari Musume Kenkyuu Hokakuirai (Monster Hunter)
(C79) [Matsumoto Drill Kenkyuujo] Ika-gana Mono ka? (Shinryaku! Ika Musume) [Digital]
[Zenra QQ] Fellatio Kouhai, Otouto ni naru [Chinese] [空想少年汉化]
[Dennou Denpa Kenkyuusho (Harukaze Koucha)] Kansaiteki Iinchou Nishi Kara Kita Iinchou... (ToHeart)
[AXIS (AXZ)] Kanojo No Kenkyuu (Trigun)
Futanari Joshi to Gyaku Anal Gakkou Seikatsu
Kiss to Chocolate no Kenkyuu Report
(C87) [Kuromahou Kenkyuujo (wizakun)] Issho ni Iko (Kantai Collection -Kancolle-)
(C82) [Minori Kenkyuujo (Minori Kenshirou)] Outo Switch [Chinese]
[Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Iinchou ga Ore Tachi no Tame ni Chou Ganbatte Kureru Hon [Digital]
Otonoko Josei-ka Kenkyuu Roku Sono Ni
[Navy (Kisyuu Naoyuki)] Okuchi no Ehon Ai Yueni -Kasuga- | For Love ~Kasuga~ (Fellatio no Ehon Soushuuhen Vol. 2) (Sengoku Basara) [English] [EHCOVE] [Digital]
Tomodachi no mama roshutsu jiyukenkyu
[Black Megane Kenkyuujou] Lamia ni Marunomi Sareru dake no Hon [English] [CrayZayJay]
(COMITIA122) [Masuda (Masuda)] Masuda Kenkyuushitsu Gendai Pura-Kikagaku I
(Tosan Matsuri 2017) [LRIG Lab (Various)] LRIG Kenkyuu Nisshi 2017 Harugou (WIXOSS)
(GO! GO! HEAVEN!! 6) [Sennen Teikoku (Mitsui Jun)] Fellatio Mamoru-kun 1+2 (Gaogaigar) [Chinese] [萌控漢化組]
[NAVY (Kisyuu Naoyuki)] Okuchi no Ehon -Honsai wa Waga ja !- | Mouth's Picture book -The true wife is me-! (Fellatio no Ehon Soushuuhen Vol. 2) (Sekirei) [English] =Wrathkal+EZRewriter= [Digital]
[Wakana Hanabi] Himawari Ichiga (Hatsukoi to Fellatio to Seiin) [English] [Flatopia + Team Koinaka]
(C70) [Matsumoto Drill Kenkyuujo (Naganoon)] Tamani wa nai no mo ii janai | How About Nai Once In A While? (Utawarerumono) [English] [EHT]
(C94) [Hiiro no Kenkyuushitsu (Hitoi)] NeuTRal Actor [English] [constantly]
(C86) [Matsumoto Drill Kenkyuujo (Naganoon, Kazumi Yoshiyuki)] Tone-san to Chikuma-san (Kantai Collection -KanColle-) [Chinese] [无毒汉化组]
Mifune-san to Shugaha to Sannin de Suru Hon
Zemuriya Report {bewbs666}
[Nyoninka Kenkyuujo (milda7)] Shin Kyousei 5-nen Make
(C93) [Minori Kenkyuujo (Minori Kenshirou)] Pouty Pukey Smile [Chinese] [沒有漢化]
(C80) [Matsumoto Drill Kenkyuujo] Aru Hi Dungeon kara Kaettara Guild ga Dream Nanchara ni Natteta de Gozaru (ToHeart2 Dungeon Travelers)
(C85) [Matsumoto Drill Kenkyuujo (Naganoon)] ChitoChiyo Shimai no Unyou ni Tsuite (Kantai Collection -KanColle-) [English] {doujins.com}
[Matsumoto Drill Kenkyuujo (Naganoon, Kazumi Yoshiyuki)] Tone-san to Chikuma-san (Kantai Collection -KanColle-) [Digital]
(COMIC1☆15) [Kakohimenoutuwa (Yuumazume)] Adult! Fushigi Kenkyuubu (Atsumare! Fushigi Kenkyuubu) [English]
(C94) [SANDWORKS (Suna)] Mika Kenkyuussho (THE IDOLM@STER CINDERELLA GIRLS)
Komorebi no Ori
(C89) [EX35 (Kamaboko RED)] Kenkyuujotte Nani Suru Tokoka Shittemasuka? | Do You Know What They Do in a Laboratory? (Bakusou Kyoudai Lets & Go!!) [English] {Shotachan}
(Reitaisai 6) [Newtype Kenkyuujo (Kotowari)] Tenshi no Kaikata Shitsukekata Ver1.03 (Touhou Project)
Fellatio no Tenshi - Fellatio Angel
(Shota Scratch 11) [Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Seigi no Mikata Vol.1 [English]
Ochiba Nikki Another Page2
Enkou Kanojo to Kengakukai
[Takahashi Note] Jiyuukenkyuu | Independent Research (COMIC LO 2015-11) [English] {5 a.m.}
(CT34) [Kuromahou Kenkyuujo (Nukaji)] Latin-kei S-kyuu Alicia-chan Jidori Nama Ona Haishin
(Kouroumu 6) [Sarurururu (Doru Riheko)] Touhou Fellatioism (Touhou Project)
(C58) [Raijinkai (Haruki Genia)] Jintoku No Kenkyuu 10
[Kuromahou Kenkyuujo (Nukaji)] Bungeibu no Asaren [Digital]
[Newtype Kenkyuujo (Kotowari)] 17th (Kantai Collection -KanColle-) [Digital]
[HeMeLoPa (Yamada Shiguma)] Kitto Kawaii Otoko no Ko Dakara - Douwa hen - (Moyashimon) [English] [mysterymeat3] [Digital]
[Tanpopo Suisan+Ziggurat (INAGO)] Natsuyasumi no Jiyuu Kenkyuu Riko Choukyou 2-kaime ~Yagai de Zecchou Sasete Miyou!~ [Full Colour Version] [English] [xinsu]
[Newtype Kenkyuujo (Kotowari)] TOHO SCHOOL LIFE (Touhou Project)
[Shadan Katsudou (Kyuusuikei)] Fellatiosaurus VS Mahou Shoujo Kouhen (Puella Magi Madoka Magica) [English] [Shady Dealer] [Digital]
Elegant Punishment Sakuya
Natsuyasumi no jiyuukenkyu Riko choukyou 1 kaime
Fellatio girl illustrated book 3
Ugai Tearai Fellatio desu
[RAID SLASH (Yahiro)] Nijiiro no Kenkyuu | 虹色的研究 (Granblue Fantasy) [Chinese] [Digital]
(C80) [Matsumoto Drill Kenkyuujo] C80 Rakugakibon (Various)
Jiyuukenkyuubu {NecroManCr}
[Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Meshimase Houkago Otokonoko! [Chinese] [瑞树汉化组] [Digital]
[Datsuryoku Kenkyuukai (Kanbayashi Takaki)] R
[Kuromahou Kenkyuujo (Nukaji)] Wareware wa Osanainode (Kemono Friends) [Digital]
[A-mania9's (The Amanoja9)] BEHAVIOUR+8 Chou☆Koikuchi [Digital]
(C68) [Newtype Kenkyuujo (Kotowari)] Chainakuikku! (Touhou Project)
Shiburin Kenkyuu suru | 시부린 연구한다
(C95) [Fujiyuu Kenkyuu (Akai Kagerou)] Mifune-san to Shugaha to Sannin de Suru Hon (THE IDOLM@STER CINDERELLA GIRLS)
(C94) [Rico-ba (Rico)] Onii-chan to Sex Kenkyuu
[bose no Doujin Manga Kenkyuujo (bose)] Kankaku no parafiria ~ nikushokukei JK tachi ni chippo no kankaku o shihaisaretara ~ [Chinese] [輝夜漢化]
[Matsumoto Drill Kenkyuujo (Naganoon, Kazumi Yoshiyuki)] GunKore Guntai Kore de Iinoda (COMIC X-EROS #13)
[Kotodama Kenkyuukai] Kyuuseishu Kyuuseichou (Death Note)
(C81) [Newtype Kenkyuujo (Kotowari)] Seidoujo o Seidoujo ni Saihenkan (Touhou Project)
SWEET COHABITATION
Fellatio Kenkyuubu
Kusuguri Egao Kenkyuu
Rica no Kenkyuushitsu ~Chiteki na Rikeijo no Seitai~
[Zonda] Fellatio Kenkyuubu Ch. 2 | Blowjob Research Club Ch. 2 (COMIC Mugen Tensei 2021-07) [Chinese]【羅莎莉亞漢化】
[Navy (Kisyuu Naoyuki)] Fellatio no Ehon Soushuuhen Vol. 2 (Various) [Digital]
Sensei no Kenkyuu 01-05
[Nusmusbim] Kuuruna Ane wa Posokoshi Kenkyuuin!! - My Cool Elder Sister Is a Worn-out Article Boffin!! (ANGEL CLUB 2019-11) [English] [SakuLENS] [Digital]
(C82) [Newtype Kenkyuujo (Kotowari)] Seidoujo o Seidoujo ni Saihenkan Sono Ni (Touhou Project)
(C83) [Minori Kenkyuujo (Minori Kenshirou)] Kichikubi Musume
Kuuruna Ane wa Posokoshi Kenkyuuin!!
Kenkyuu Koumoku_ Seishoku Koui
[Naruto Kenkyu Sha (Hisakabe Oto)] Dream Christmas Night (DREAM C CLUB) [Digital]
(C87) [Nightmare Express -Akumu no Takuhaibin-] Yokubou Kaiki Dai 511 shou -Kyokujou Shota Zenritsusen Goumon Kenkyuusho・Shounen ShaseiKei- [Chinese] [瑞树汉化组]
Oshioki Wanko 3
Seitai Kenkyuu no Theme wa Boku no Mama? Nakama-tachi to Sensei to no Natsu no Kyoudou Gakushuu
Erina-sama no Renai Kenkyuukai. 2
Joushiki Henkan Appli ~ Namaiki na Imouto ni Shikou wo Kakikaete Juujun Fellatio Houshi Sasete Mita
[bose no Doujin Manga Kenkyuujo (bose)] Kankaku no parafiria ~ nikushokukei JK tachi ni chippo no kankaku o shihaisaretara ~
(C95) [Hiiro no Kenkyuushitsu (Hitoi)] NeuTRal Actor 2 [Chinese] [無邪気漢化組]
[Takurou] Rika no Kenkyuushitsu Report File Choujin ni Naru X (COMIC HOTMiLK 2014-01) [Chinese] [黑条汉化] [Decensored]
(C86) [Naruto Kenkyuusha (Hisakabe Oto)] Hizamakura de Gohoubi (Dream C Club)
(Shota Scratch 22) [Datsuryoku Kenkyuukai (Kanbayashi Takaki)] UNBALANCE
(C88) [datsuryoku kenkyuukai (Kanbayashi Takaki)] Ore no Shinyuu wa Nanika ga Okashii
[Takurou] Rika no Kenkyuushitsu Report File Doubutsu to Ohanashi Dekichau (COMIC HOTMiLK 2015-08) [Chinese] [黑条汉化]
[Kuromahou Kenkyuujo (Nukaji)] Bungeibu no Asaren | Literary club's morning training [English] [DrunkenWeeb] [Digital]
[Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Meshimase Houkago Otokonoko! [Digital]
[Black Megane Kenkyuujo] Marunomi no Mori
(C94) [Fujiyuu Kenkyuu (Akai Kagerou)] Mifune Miyu-san to Etude Suru Hon (THE IDOLM@STER CINDERELLA GIRLS)
[Navy] Source of Happiness | Fellatio no Ehon Soushuuhen 2 (Fairy Tail) [English] [EHCOVE]
(SC56) [Ajisaidenden (Kawakami Rokkaku, Takanashi Rei)] Kazamori Hakase no Chotto Ecchi na Kenkyuu ~Kouhen~ (UN-GO)
(C87) [Minori Kenkyuujo (Minori Kenshirou)] Calpis no Awa [Chinese] [沒有漢化]
[Tsuki] Kenkyuu Shoujo Feito (Magical Girl Lyrical Nanoha)
Rika no Kenkyuushitsu Report File Doubutsu to Ohanashi Dekichau
[Hitoi] Enkou Kanojo to Kengakukai | Paid dates with my girlfriend prostitute side-by-side experience [English] [Digital]
[Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Yuuwaku Shite Kuru Otouto [Digital]
(C92) [Newtype Kenkyuujo (Kotowari)] 1414 Ni 13-Goro (Kantai Collection -KanColle-)
[Muchin] Sakura-chan no Jiyuu Kenkyuu 2 | Sakura-chan's Free Study 2 [English]
Fellatio girl illustrated book 2
[Inokashira Kenkyuusho] Zakkichou 2004 Natsu
[Anthology] Fellatio Anthology Kouin Ojoku
(C85) [Minori Kenkyuujo (Minori Kenshirou)] Geroko-chan to Chikubiko-chan
(COMIC1☆7) [Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Aniki ni Urarete Hitobanjuu 2
(C90) [Naruto Kenkyuusha (Hisakabe Oto)] Bi-SHUN (Bakuon!!)
(Houraigekisen! Yo-i! 3Senme!) [Kuromahou Kenkyuujo (wizakun)] Shinkai Yori (Kantai Collection)
[Miyabe Kiwi] Fellatio no Tensai [Digital]
(C56) [Raijinkai (Haruki GeNia)] Jintoku No Kenkyuu 8
[Matsumoto Drill Kenkyuujo] Akuochi [Chinese]
[Newtype Kenkyuujo (Kotowari)] Hajimete no Kuchikukan Kai (Kantai Collection -KanColle-) [Digital]
[ Matsumoto Drill Kenkyuujo] do risu ta (LUCKY☆STAR)
Fellatio Kenkyuubu Ch.4