Fellatio Kenkyu

[Stapspats (Hisui)] Pokémon Kenkyuusha Sonia Kyousei Saimin Camp (Pokémon) [Digital]

Ore no Shinyuu wa Nani Nani ka ga Okashii | My Best Friend's Kinda Weird

(Shota Scratch 8) [Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Boku no Takaramono

Fellatiosaurus VS Mahou Shoujo Zenpen

[Kotodama Kenkyuukai] Real Oisha-san Gokko (Blazblue)

(C75) [Matumoto Drill Kenkyuujo (Naganoon, Nasu)] Defrag. 2

[Hroz] Succubus no Ningen Kenkyuu

[Hroz] Succubus no Ningen Kenkyuu | Human Research by a Succubus [English] [thetsuuyaku + 4dawgz]

Fellatio Anthology Kouin Ojoku

(C88) [Eroquis! (Butcha-U)] DELIGHTFULLY FUCKABLE AND UNREFINED FELLATIO DAY!

(Reitaisai SP2) [Newtype Kenkyuujo (Kotowari)] Miko-chan ni 10-ko hodo Yoku o Buchimakete mita. (Touhou Project)

(Futaket 13) [Nanashimushi Land (Nanashimushi)] Onaho Kenkyuubu! 2 | 飞机杯研究部2 [Chinese] [黄记汉化组]

(C93) [Naruto Kenkyu Sha (Hisakabe Oto)] Brilliant Sweet (THE IDOLM@STER CINDERELLA GIRLS)

(Mou Nanimo Kowakunai 29) [Shadan Katsudoh (Kyuusuikei)] Fellatiosaurus VS Mahou Shoujo Chuuhen (Puella Magi Madoka Magica)

Natsuyasumi Kids wa Kozukuri Kenkyuuchuu

(C83) [Kuromahou Kenkyuujo (Nukaji)] Ore to Rikka no Kodomo wa Jaou Shingan wo Motsu Yami no Hoo no Tsukai Shu de Kitto Saikyou-da! (Chuunibyou demo Koi ga Shitai!)

NeuTRal Actor 3

(COMIC1☆20) [Neko-bus Tei (Shaa)] Natsu Yasumi no Saimin Jiyuukenkyuu (THE iDOLM@STER: Shiny Colors)

[MALL Kenkyuujo (mallta)] Yuiga Dokusen! (THE IDOLM@STER CINDERELLA GIRLS) [Digital]

(C91) [Neko wa Manma ga Utsukushii (Hisasi)] Erina-sama no Renai Kenkyuukai. 2 (Shokugeki no Soma)

Département de recherche en fellations - Ch.01

[961works] Seitai Kenkyuu no Theme wa Boku no Mama? Nakama-tachi to Sensei to no Natsu no Kyoudou Gakushuu [Chinese]

(Reitaisai 5) [Ishikiriba (Various)] Yagokoro Kenkyuushitsu - Yagokoro Lab. (Touhou Project)

Onaho Kenkyuubu! 2

Uremomo

[Naruto Kenkyu Sha (Hisakabe Oto)] Pro Status (Dream C Club) [Digital]

[Ninnindo (Tonsuke)] N Zukan ~Fellatio Hen~ (Various)

[Matsumoto Drill Kenkyuujo (Drill Eternal)] Tamakin (ToHeart 2)

[Nyoninka Kenkyuujo] Chijoku Josou no Yoru

[RED-RUM] Futa Ona

LRIG Kenkyuu Nisshi 2016 Nenmatsu Tokudai-gou

(C82) [Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Shikotama!

(Futaket 12) [datsuryoku kenkyuukai (Kanbayashi Takaki)] Futanari Joshi to Gyaku Anal Gakkou Seikatsu [English] [Sn0wCrack]

(CT23) [Kuromahou Kenkyuujo (wizakun)] Teitoku Shuuri shite Mutsu + Ushio (Shoushou) (Kantai Collection -KanColle-)

(C81) [Newtype Kenkyuujo (Kotowari)] Seidoujo o Seidoujo ni Saihenkan (Touhou Project)

(C91) [Neko wa Manma ga Utsukushii (Hisasi)] Erina-sama no Renai Kenkyuukai. 2 | Erina-sama's Love Laboratory. 2 (Shokugeki no Soma) [English] [Royal_TL]

Yukiko No Fellatio

(C82) [Minori Kenkyuujo (Jikken Shirou)] Outo Switch [English] [LWB + Anon]

[Matsumoto Drill Kenkyuujo] Drill Kingdom (comic party)

(C91) [Neko wa Manma ga Utsukushii (Hisasi)] Erina-sama no Renai Kenkyuukai. 2 (Shokugeki no Soma) [Chinese] [无毒汉化组]

[Naruto Kenkyu Sha (Hisakabe Oto)] Dream Honeymoon Night (DREAM C CLUB) [Digital]

[Kurage Kenkyuusho] Drug and Drop (ENG) =Wrathkal+Zorbius=

(Futaket 13) [Nanashimushi Land (Nanashimushi)] Onaho Kenkyuubu! 2

[Hijouguchi (DARKSIDE-G, TEI-OH-K-TAKAMURO)] Futanari Seitaikougaku Kenkyuusho (Ragnarok Online) [Digital]

(C91) [Neko wa Manma ga Utsukushii (Hisasi)] Erina-sama no Renai Kenkyuukai. 2 | Erina-sama's Love Laboratory. 2 (Shokugeki no Soma) [English] [Royal_TL] [Decensored]

[Anyakunin] Efu no Hon - Fellatio

(COMIC1☆3) [Matsumoto Drill Kenkyuujo (Various)] TH2 Soushuuhen (ToHeart2)

Marugari Jigokuhen

[Hiiro no Kenkyuushitsu (Hitoi)] Ochiba Nikki -Roshutsu Choukyou Hen- Omakebon

[Raijinkai (Haruki Genia)] Jintoku No Kenkyuu 1.5

Shinkon, Mash

(C68) [Newtype Kenkyuujo (Kotowari)] Chainakuikku! (Touhou Project)

(CT22) [Kuromahou Kenkyuujo (wizakun)] Te-toku Shu-ri shite (Kantai Collection -KanColle-) [Chinese] [靴下汉化组]

[Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Omoi, Omoware. [Digital]

[Dulce-Q] Niyotaika Ryoujoku Kensa [Chinese] [鬼畜王汉化组]

Adult! Fushigi Kenkyuubu

Kenkyuu Koumoku: Seishoku Koui

Onaho Kenkyuubu! 2 | 飞机杯研究部2

Kurodate o Shiro ni Someru Seishoku Kenkyuu o

[Zenra QQ] Fellatio Kouhai, Otouto ni naru [English] [Yuuchen]

[Miyabe Kiwi] Fellatio no Tensai [Digital]

(C86) [Minori Kenkyuujo (Minori Kenshirou)] Roshutsu Joshi | Exhibitionist Girl [English]

Sensei no Kenkyuu Vol. 1

[Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Koi to Sakura

[Takurou] Rika no Kenkyuushitsu Ch. 1-2 [English] [Crystalium]

Futanari Kenkyuu Dousoukai | Futanari Research Club

Ochako Fellatio | El Blow Job de Ochako

[Slow Onanie Kenkyuukai] Yukkuri Shiteitte ne

(C92) [ARCHF (Riki)] AFK (Atsumare! Fushigi Kenkyuubu)

Mika Kenkyuussho

Zecchou Kenkyusho 2

[Slow Onanie Kenkyuukai] [Nemunemu]Yukkuri Shiteitte ne[Chinese][刷牙子汉化]

Tateba Sokuhame Suwareba Fellatio Aruku Sugata wa Roshutsu Play

(C67) [Matsumoto Drill Kenkyuujo (NAGANOON, Nasu)] DRILL IMPULSE (Mobile Suit Gundam SEED)

(C93) [Minori Kenkyuujo (Minori Kenshirou)] Pouty Pukey Smile

(C88) [Eroquis! (Butcha-U)] DELIGHTFULLY FUCKABLE AND UNREFINED FELLATIO DAY! [English] {thetsuuyaku} [Decensored]

[Kotobuki Mairo] Clijo AV Kenkyuukai (COMIC Kuriberon DUMA 2021-11 Vol. 30) [Chinese] [cqxl自己汉化]

Kouchou Sensei no Houkago Jiyuu Kenkyuu Kyonyuu JK o Jupujupu Nuponupo Chousachuu ~Juujun na Bukatsu Shoujo Hen~

[Jairou] Nanika Ayashii Eizou Kenkyuubu Scene:00 Noa-san no Nyuubu-shiki (COMIC MILF 2017-08 Vol. 37) [Chinese] [人形个人汉化] [Digital]

(C91) [Lrig Lab (Various)] Lrig Kenkyuu Nisshi 2016 Nenmatsu Tokudaigou (WIXOSS)

[Kawahara Shin] Yumeiro Sisters!!

[Naruto Kenkyu Sha (Hisakabe Oto)] Dare no Shiwazaka Wakarimasu? (GJ-bu) [Digital]

[Matsumoto Drill Kenkyuujo (Naganoon, Kazumi Yoshiyuki)] Naka-chan wa Zettai Rosenhenkou Shinaindakara! (Kantai Collection -KanColle-) [Digital]

(C92) [Tetsugakuteki Zombie (Nekubila)] Ochinpo ga Haetano de Otete de Kakimasu. (Kizuna Ai)

[Naruto Kenkyu Sha (Hisakabe Oto)] Kouenji No Hi Nichijou (Dream C Club) [Digital]

[bose no Doujin Manga Kenkyuujo (bose)] Jikan no Majo ~Eroi Onee-san ni Jikan Teishi Sarete Iroiro Sarechau Ohanashi~ [Chinese] [輝夜漢化]

(C90) [Neko wa Manma ga Utsukushii (Hisasi)] Erina-sama no Renai Kenkyuukai. (Shokugeki no Soma) [Chinese] [空気系☆漢化]

Enkou Kanojo to Kengakukai

(C82) [datsuryoku kenkyuukai (Kanbayashi Takaki)] Futama Byutsu (Smile Precure!)

[Newtype Kenkyuujo (Kotowari)] Kekkon Kakko Ten (Touhou Project)

Anedeshi Kenkyuukai

[Kuromahou Kenkyuujo (Nukaji)] Kidoairaku (Touhou Project) [English] [dtb] [Digital]

(C92) [Naruto Kenkyu Sha (Hisakabe Oto)] SWEET ATTACK (THE IDOLM@STER CINDERELLA GIRLS)

[Oishii Udon (Ocza)] Kenkyuu Seika (Atsumare Fushigi Kenkyuubu)

[Katou Jun] Avatar Trance! Ch. 1-4 [Chinese] [鬼畜王汉化组] [Digital]

Fellatio Queen Reiko no Nichijou {doujins.com}

(COMIC1) [SimaSima System (Nagisawa You)] Suzumiya Haruhi no Daikenkyuu! (The Melancholy of Haruhi Suzumiya)

[Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Kamikirimushi [English]

Kuuruna Ane wa Posokoshi Kenkyuuin!!

(Japariket) [Kuromahou Kenkyuujo (Nukaji)] Koubi no Shikata o Oshiete (Kemono Friends)

(C97) [Fujiyuu Kenkyuu (Akai Kagerou)] Fuyuko ni Sukebe na Jidori o Okutte Kure to Tanomu Hon (THE iDOLM@STER: Shiny Colors) [English] [obsoletezero]

[Maimu Maimu] AneDol ~Onee-chan wa Idol~ [Digital]

[Datsuryoku Kenkyuukai (Kanbayashi Takaki)] CRUSHERS 2 [Chinese] [不咕鸟汉化组] [Digital]

[Takurou] Rika no Kenkyuushitsu Report File Body Reflare DX (COMIC HOTMiLK 2014-10) [Chinese] [黑条汉化]

(C72) [Matumoto Drill Kenkyuujo (Naganoon)] Dori Suta (Lucky Star)

[Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Bitch o Otosu Niha [Digital]

(C52) [Raijinkai (Haruki Genia)] Jintoku No Kenkyuu 5

(C77) [Tyongera Kenkyuujo (Tyongera.)] LOVE & SE'X (Fresh Precure!)

Occult Mahou Shoujo Kenkyuukai

Erina-sama no Renai Kenkyuukai. 2 I Erina-sama's love research lab 2

Ochiba Nikki Another Page

(COMITIA122) [Masuda (Masuda)] Masuda Kenkyuushitsu Gendai Pura-Kikagaku I

Furachinaru

[Hoshizaki Hikaru] Sweet Spot Ch. 1~4 [English] [Hennojin] [Digital]

Dare no Shiwazaka Wakarimasu?

Rika no Kenkyuushitsu ~Sponsor Dai Boshuu no Maki~

(C84) [Saikasou Seiteki Shoudou Kenkyuukai (Makuwauni, Nega Samurai, Hissui)] Mikotonori o Ukete wa Kanarazu Kunage! (Touhou Project)

[Blmanian] Beropi | Tongue Piercing (Se-Syun Sakari) [English] [desudesu]

Shikkoku no Dekachin ni Netorareta Hitozuma 10nin no Fellatio Zukan&ShousaiKeii

[Petancoside] Shokushu Kankin Kenkyuushitsu [Digital]

[Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Boku ga Shihai Suru Senpai [Digital]

(SC56) [Ajisaidenden (Kawakami Rokkaku, Takanashi Rei)] Kazamori Hakase no Chotto Ecchi na Kenkyuu ~Kouhen~ (UN-GO) [English] [biribiri]

Cosplay Roshutsu Kenkyuukai Complete ban

[Matsumoto Drill Kenkyuujo] Super Robot Taisen Immoral (Super Robot Wars)

[Tanpopo Suisan+Ziggurat (INAGO)] Natsuyasumi no jiyuukenkyu Riko choukyou 1 kaime~renzoku zetchou o sa se te miyo u!~ [Digital]

(Akatsuki no Utage 1) [Newtype Kenkyuujo (Kotowari)] Kakuji Toshokan Gakushuu (Touhou Project)

(CR35)[Matsumoto Drill Kenkyuujo] Noubaku Gehinna Onii-chan 1

[Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Ase to Namida to Ketsubat [Digital]

(SC33) [Newtype Kenkyuujo (Kotowari)] Elementaler Confusion Obscenity (Emil Chronicle Online)

Onaho Kenkyuubu! 1.11 | 飞机杯研究部

Ugai Tearai Fellatio desu

[Datsuryoku Kenkyuukai (Kanbayashi Takaki)] Yuuwaku Shite Kuru Otouto [Chinese] [瑞树汉化组] [Digital]

[Haracock no Manga Beya (Haracock)] OwnWill Boku ga Atashi ni Natta Toki #2 Fellatio

[Tanpopo Suisan+Ziggurat (INAGO)] Natsuyasumi no Jiyuu Kenkyuu 4 [Full Colour Version] [chinese] [SAN个人汉化]

[Takurou] Rika no Kenkyuushitsu Report File Choujin ni Naru X (COMIC HOTMiLK 2014-01) [Chinese] [黑条汉化] [Decensored]

[Ao Banana] Kozue Ganbaru (COMIC Shitsurakuten 2016-12) [Chinese] [丧尸汉化]

NeuTRal Actor 3

(Kouroumu 4) [Newtype Kenkyuujo (Kotowari)] Tenshi no Kaikata Shitsukekata Ver1.02 (Touhou Project)

Elegant Punishment Sakuya

Futanarikko Kenkyuu Channel

[Naruto Kenkyu Sha (Hisakabe Oto)] Hizamakura de Gohoubi (Dream C Club) [Digital]

[Tsurupeta Kenkyuusho (Various)] Tsurupeta Kenkyuu Houkokusho 005 "Dengeki Jigoku" - Turupeta Research Report

[Zenra QQ] Fellatio Kouhai, Otouto ni naru

(COMIC1☆13) [Ijou Nouryoku Kenkyuukaihatsu Kikou (Various)] Inousha Shoujo Kesson Goudou

(C94) [Rico-ba (Rico)] Onii-chan to Sex Kenkyuu [Chinese] [脸肿汉化组]

(C92) [Nanashimushi Land (Nanashimushi)] Onaho Kenkyuubu! 3 | 飞机杯研究部 3 [Chinese] [黄记汉化组]

(COMIC1) [SimaSima System (Nagisawa You)] Suzumiya Haruhi no Daikenkyuu! (The Melancholy of Haruhi Suzumiya) [English] [FAKKU]

[Kurage Kenkyuusho] Drug and Drop

Foooolish!

(C63) [Matsumoto Drill Kenkyuujo (Drill Eternal)] Drill Vanguard (To Heart)