Primary Quantitative Researc hentai comics

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

Zecchou Kenkyuujo 2 Orgasm Research Facility 2

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

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

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

Zecchou Kenkyuujo | Orgasm Research Facility

Primary Target -Zenpen-

Research Love Make Presentation | Research Lab x Expression

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

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

Futanari Kenkyuu Dousoukai | Futanari Research Club

Fellatio Research Department Epilogue

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

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

[HAPPY CORE (Kinoshita Ichi)] PRIMARY HEART

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

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

Fellatio Kenkyuubu Blowjob Research Club Ch. 3

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

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

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

Fellatio Kenkyuubu - Fellatio Research Department

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

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

Primary Fever

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

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

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

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

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

Fellatio Kenkyuubu | Blowjob Research Club Ch. 2

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

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

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

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

Attack on Research

Binyuchousain Ayako | Busty Researcher Ayako

Movie Research Lovers

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

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

Magical Occult Research Girl Defeated

Twilight's Research | 暮光学习计划

Dance! Tentacle Research Institute

PRIMARY HEART

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

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

Fellatio Kenkyuubu | Blowjob Research Club

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

Break Time with Primaries at the Net Cafe

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

[Department Y Research Institute] Bōkoku Ōji no matsuro

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

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

Zecchou Kenkyuujo 2 | Orgasm Research Facility 2

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

Shizuku Primary

Fellatio Research Department | Fellatio Kenkyuubu - Ch.01

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

Dance! Tentacle Research Center - Seedbed-hen

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

Primary Contact

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

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

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

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

(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]

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

Mahou Tsukai Sakusei Kenkyuu | Witch's Semen Milking Research

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

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

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

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

Dance! Tentacle Research Institute

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

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