Primary Quantitative Researc

[Mugen@WORKS (Akiduki Akina)] Ano Natsu wo Mou Ichido (Ano Natsu de Matteru)

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

Kitto Akumu ni Chigainai！

(C78) [Draw Go (Souichi)] Tokumei Research 1999 ~ Maya-chan Shinsou Kaimei File ~ (Occult Academy)

(C68) [Nagumo Kare Bu] Primary 3 (To Heart 2)

[toyasuaina (Toyasu Aina)] Shizuku Primary (Love Live! Nijigasaki High School Idol Club) [Chinese]

Break Time with Primaries at the Net Cafe

Marobashi - [King of Fighters] - [Japanese]

access code primary

Futanari Kenkyuu Dousoukai | Futanari Research Club

Hinokami Sex.

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

[HAPPY CORE (Kinoshita Ichi)] PRIMARY HEART

Yuri-ken Beit Boshuuchuu Soushuuhen | Yuri's Lab Wants Research Assistants

[Haruta] Youkoso! BL Kenkyuu Club | Welcome to the Yaoi Research Club 2-in-1 Bonus Chapter [English] [Digital]

[Igarashi Denma] Oppara －OPPAI Paradise －

Tookute Chikaki wa Danjo no Naka

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

[Zonda] Fellatio Kenkyuubu - Fellatio Research Department | Blowjob Research Club Ch. 3 (COMIC Mugen Tensei 2022-02) [English] [CrinkzScans] [Digital]

[Ahemaru] Senkou no Tina wa Makenai (2D Dream Magazine 2019-06 Vol. 106) [English] [Digital]

PRIMARY HEART

Zecchou Kenkyuujo 2 | Orgasm Research Facility 2

[Department Y Research Institute] Gen'ō No Seidorei-Chan De Asobou!

Magical Occult Research Girl Defeated

Primary Target -Zenpen-

Fellatio Kenkyuubu | Blowjob Research Club Ch. 2

Tonari no Onee-san to Himitsu no Indoor Life

[Department Y Research Institute] Bōkoku Ōji no matsuro

(C95) [Mysp5cm (Mareo)] Iregui Otokonoko x Dairankou Hamedori Namahousou

[Bijutsubu (Shiduki Michiru)] Euphobian no Hibiki: Quintent (Hibike! Euphonium) [Digital]

[Shinsekai Set (Hetaren)] Kurodate o Shiro ni Someru Seishoku Kenkyuu o (Blue Archive) | Sexual Gourmet Research: Dyeing Kurodate White [English] [Douzo Lad Translations]

[Zonda] Fellatio Kenkyuubu | Blowjob Research Club [English] [Uncensored] [head empty + RedLantern]

Dance! Tentacle Research Institute

Research Love Make Presentation | Research Lab x Expression

28 Kaiten Majime Bitch no Shiyou Hou.

Akane-chan o Kusugutte Onara Saseru Game

[Hara Shigeyuki] Binyuchousain Ayako | Busty Researcher Ayako [English] {Tadanohito} [Digital]

Manga Research Triangle

(Puniket 17) [System ES (SHUKO)] Kuro no Gishiki to Shoujo

[Noise] Chinko no Jiyuu Kenyuu | Dick Research Project (COMIC LO 2019-05) [English] [Doki Fansubs] [Digital]

(C78) [Yo wa Okazu wo Shomou Shiteoru (Shian)] Onna Kenkyuuin no Ijou na Aijou | A Female Researcher's Abnormal Desire [English] =LWB=

COMIC Magnum Vol. 84

Manga Bangaichi 2006-09

(SC45) [Draw Go (Watanabe Souichi)] Bakkon Cafe | 逼婚咖啡厅 (Pokémon) [Chinese] [想对增田先辈使用真气拳个人汉化]

[Department Y Research Institute] Rorisakyubasu Wa Ningen Ni Tsukamaruto Dō Naru No?

GRAVITON23

Primary Fever

(RTS!!5) [Zeroshiki (Kabosu)] Primary Target -Kouhen- (Haikyuu!!) [English] [UnmeiNoChance]

[Department Y Research Institute] Bōkoku ōjo no matsuro

M Dorei no Senpai ni Akogarete Kusogaki ni Pet Shigan Shimashita

[りんごくらぶ] それ行け炎上流星群編

[Kinku] Jiyuukenkyuu Bitch Report | Research Project: Bitch Report! (COMIC LO 2013-09) [English]

Two Girl's Suck-Suck Research Note

Fellatio Research Department Epilogue

(C86) [RIX (Mamiya)] Kizutsui ta yoru ni (Shingeki no Kyojin)

Binyuchousain Ayako | Busty Researcher Ayako

[Zonda] Fellatio Kenkyuubu Ch. 3 | Blowjob Research Club Ch. 3 (COMIC Mugen Tensei 2022-02) [English] [Sloppy Seconds] [Digital]

Zettai ni Ikasetai Adult Goods Maker Kaihatsubu VS Zettai ni Ikanai Adult Goods Maker Eigyoubu | The Sales Rep Who Absolutely Won’t Come VS The Researcher Who Absolutely Wants to Make Her Come

JS Kenkyuukai | JS Research Seminar

Jiyuu Kenkyuu de Ochinchin o Shiraberaremashita | We Decided to Examine a Penis for Our Independent Research

(C96) [Tamarun (Tamarun)] Abby Kenkyuu Bon | Abby Research Book (Fate/Grand Order) [English] [Team Chungus TL]

[Kawai Shun] Odoru! Shokushu kenkyūjo (Omake manga) | Dance! Tentacle Research Center (Bonus Story) [English]

[Ogawa Kanran] Yoi Kono Jiyuu Kenkyuu | Independent Research Time [English] [Jojo]

Primary Contact

Chinpo shiikukakari

[SOUND MILK (Otochichi)] Mahou Tsukai Sakusei Kenkyuu | Witch's Semen Milking Research (Mahou Tsukai Precure!) [English] [ATF] [Digital]

Lunalu ga Onaru

Shoujo ni Natta Neko to An-An Suru dake no Hon

(C74) [Tsurupeta (Various)] Tsurupeta Kenkyuu Houkokusho "Kakyuu Sentou In no Isshou" - Turupeta Research Report

Adult Goods Tanchiki ~Machi no Inran Onna o Research Seyo~

[Shimoyakedou (Ouma Tokiichi)] Kouwanseiki-chan to Kekkon Kakko Kari (Kantai Collection -KanColle-) [Digital]

Insect Research Institute 2

Oku-sama wa Hayashimo-chan

[Matsurioka Hideyuki] Reken ~Shinsoku Raper Domo~ | Rape Researches

[Zonda] Fellatio Kenkyuubu Ch. 2 | Blowjob Research Club Ch. 2 (COMIC Mugen Tensei 2021-07) [Chinese]【羅莎莉亞漢化】

[Mother2] Kimaira Kenkyuu File - Chimera Research File [Chinese](Uncensored)

[Kawai Shun] Odoru! Shokushu kenkyūjo (Omake manga) | Dance! Tentacle Research Center (Bonus Comic) [English]

Research of Barnaby Brooks Jr.

BLood+s

[Kawai Shun] Odoru! Shokushu Kenkyuujo "Naedoko" Hen | Dance! Tentacle Research Center - Seedbed-hen [English] [solowing]

[Modae Tei] DraQue Monster Joukan ~Chimera Jou no Chupachupa Kuuchuu Rinkan Fuck~ (Dragon Quest Monsters) [Digital]

Fellatio Kenkyuubu Ch. 3 | Blowjob Research Club Ch. 3

(COMIC1☆11) [Showa Saishuu Sensen (Hanauna)] Kamiyama Koukou Omanko Kenkyuukai Katsudou Kiroku | Kamiyama Highschools Vagina Research Society Activity Record (Hyouka) [English] [Doujins.com]

Zecchou Kenkyuujo 2 | Orgasm Research Facility 2

(C63) [Nagumo Curry-Bu (Nagumo)] Primary (Ragnarok Online)

Dokidoki Occult Kenkyuubu | Heart Pounding Occult Research Club

Stray Dog

(C82) [Ura Urethan (Akari Seisuke)] Mou Chotto Dake Onnanoko (Cardfight!! Vanguard) [English] [saha]

(C87) [Zeroshiki (Kabosu)] Primary Target -Zenpen- (Haikyuu!!) [English] [UnmeiNoChance]

[Okottei] Gekitotsu ☆ Sex Monsters ~Konbou Chinpo vs Succubus no Kishi~

Shizuku Primary

Movie Research Lovers

Zecchou Kenkyuujo | Orgasm Research Facility

Spare Key 1

Youkoso! BL Kenkyuu Club | Welcome to the Yaoi Research Club

Dance! Tentacle Research Institute

Mahou Tsukai Sakusei Kenkyuu | Witch's Semen Milking Research

Douga Haishin

Boku no Chuusei wa Saigo no Itteki | Loyal to the Last Drop

(C81) [Saigado (Saigado)] R-LAB. - Dr. Akagi's individual research lab (Neon Genesis Evangelion) [Chinese] [瓜皮漢化·母系戰士出品@萌夢星君發佈]

Kamiyama Koukou Omanko Kenkyuukai Katsudou Kiroku | Kamiyama Highschools Vagina Research Society Activity Record

Ame no Kioku · Ho

Dark Game Ch.1-8

Kuso Kizoku ni hamerareru Inaka Musume

[Minamida Usuke] Dokidoki Eizou-Kenkyuu-Bu | Steamy Cinema Studies and Research Club (COMIC HOTMILK 2017-01) [English] [Digital] [Incomplete]

[Shiranui Research Institute (Shiranui)] Shiranuhi Ninpo cho ichi-kan (King of Fighters, Street Fighter) [Digital]

[Ninokoya (Ninoko)] Elf ni Inmon o Tsukeru Hon LEVEL:5 [English] [biribiri] [Digital]

Inuneko Shimai

[Kawai Shun] Odoru! Shokushu Kenkyuujo | Dance! Tentacle Research Institute [English] [solowing]

Fellatio Kenkyuubu Blowjob Research Club Ch. 3

[Kawai Shun] Dance! Tentacle Research Institute [English]

Twilight's Research | 暮光学习计划

(C75) [Tsurupeta Kenkyuusho (Various)] Tsurupeta Kenkyuu Houkokusho "Kessen Zenya" - Turupeta Research Report

Primary Target -Kouhen-

(C66) [Hanzai Tengoku (Hasei Agana)] ACCESS CODE PRIMARY (Fate/stay night) [Chinese] [冬木守護者漢化組]

[Kawai Shun] Odoru! Shokushu Kenkyuujo (Omake manga) | Dance! Tentacle Research Center (Bonus Comic) [Chinese]

[Tempuru] Albedo & Sucrose's Isekai Observation Research Report

(C77) [Tsurupeta (Various)] Tsurupeta Kenkyuu Houkokusho "Shin Hissatsu Waza no Kyoufu " - Turupeta Research Report

Dance! Tentacle Research Center - Seedbed-hen

Research Fellow

Igyou Seibutsu Zukan Michi no Kenkyuu Kikan Hen I | Illustrated Adulteration of Deformed Organisms: Unknown Research Institution, I

Fellatio Kenkyuubu | Blowjob Research Club

[Ueda Yuu] Rika-chan no Oji-san | Rika-chan's Dad (Ero Shota 4 - Bitch Boys) [English] [N04h]

Attack on Research

[Dokurosan] Eiken Lovers | Movie Research Lovers (COMIC Tenma 2009-05 Vol. 132) [English] [Brolen]

(C80) [Digital Accel Works (INAZUMA)] INAZUMA Jiyuu Kenkyuu | INAZUMA Research Project (PreCure) [English] {5 a.m.}

Futanari Coming Out

[Bai Asuka] Tsumi Haha 2 (Sinful Mother 2)

[Puppukupu (Kawaisaw)] Comi 1 no Omake Manga (Touhou Project) [Digital]

Bowsette's Research

Kamei Yogorouta - Kitsune no Tama Yobai vol 1 [Translated]

[Okamura Morimi] Haha Koi

[Shirokurousa (Sugiyuu)] Kiyowa na Kanojo wa Aragaenai ~Intern Netorare Choukyou Jisshuu~

Ijimerarekko Club

(ABC 4) [AOI (Makita Aoi)] OUTBREAK [Toppatsu]

Fellatio Research Department | Fellatio Kenkyuubu - Ch.01

[Slow Masturbation Research Society] "The seven fundamental operations" [ENG]

[Sasanoha Toro] Yasashiku Mukimasu node | I'll Peel It Gently (Fate/Grand Order) [English] [Amoskandy] [Digital]

(C93) [Dodoitsu. (Panco.)] Research Love Make Presentation | Research Lab x Expression (Motto! Hinekure Chaser 3) [English] [Pink Cherry Blossom Scans]

[Takahashi Note] Jiyuukenkyuu | Independent Research (COMIC LO 2015-11) [English] {5 a.m.}

(C63) [MUSASABIDO (Bakuchin)] Research of a maid

Fellatio Kenkyuubu - Fellatio Research Department

[Un-Go] Doctor Kazamori's Slightly Naughty Research 2 [English]

Gal-iro ni Someagaru | Aun mas teñido en colores de chica

Zecchou Kenkyuujo 2 Orgasm Research Facility 2

(C59) [Houraisaikan, Fuujinken (Morikawa Haru)] Yogoto no Duelist (Yu-Gi-Oh!) [English] [rookie84]

(C84) [Kacchuu Musume (Yukiyanagi)] Shingeki no Kenkyuu | Attack on Research (Shingeki no Megami) (Shingeki no Kyojin) [English] [CGRascal]

(C91) [Neko wa Manma ga Utsukushii (Hisasi)] Erina-sama no Renai Kenkyuukai. 2 I Erina-sama's love research lab 2 (Shokugeki no Soma) [English] [Metaphrastes]

[1bit (yuyu)] Igyou Seibutsu Zukan Michi no Kenkyuu Kikan Hen I | Illustrated Adulteration of Deformed Organisms: Unknown Research Institution, I [English]

(C66) [Hanzai Tengoku (Hasei Agana)] ACCESS CODE PRIMARY (Fate/stay night)