Sperm Experiment

Spermanager Kiyoko-san 3

Naruto and Hinata's Sunbathing Experience

Sperm Of The Gerudo

[English] Koshiki Experience (Sachisuke Masumura, another "Cut in half")

Inma no Esayari Taiken | Succubus Feeding Experience

Onnanoko demo Chikubi Shasei ga Taiken dekiru Men's esthetic? Gaarutte Hontoudesuka? | Is There Really A Men's Beauty Salon Where Even Girls Can Experience Nipplegasm Ejaculations?

[Takahashi Note] Sakusei Carnival - It's Carnival of sucks sperm! [Chinese]

(C86) [Condiment wa Hachibunme (Maeshima Ryou)] Happiness experience (HappinessCharge Precure!) [Chinese] [狼娘汉化]

Experiment

(COMIC1☆7) [GENETRIX (GEN)] sperma card attack!! Eiyashou Mokou Hen SP (Touhou Project)

[Nitta Jun] Natsu Taiken Monogatari 2 | Summer Experience Story 2 (Doutei Panic!!) [English] [Digital]

[Sakazaki Freddie] Mitsuko-chan no nyuugyuu taiken-ki | Mitsuko's Experience as a Milk Cow (COMIC Shingeki 2013-02) [English] [thetsuuyaku]

[Waffle Doumeiken (Tanaka Decilitre)] Joukyuu Seishi Chakushou Gimuka!? EX1 ~Class no Takane no Hana no Hentai Seiheki~ | Mandatory Superior Sperm Implantation! EX1 ~The Perverted Desires of the Unattainable Class Flower~ [English] [Digital]

Ane Taiken Ganbou | The Desire For The Older Sister Experience =TLL + CW=

Seieki Makiba Semen Prison | Spermagefängnis

[Michiking] Ane Taiken Shuukan | The Older Sister Experience for a Week [English] [PSYN] [Digital]

[Juan Gotoh] Boku to Boku no Hatsutaiken | Her and My First Sexual Experience (COMIC Masyo 2006-09) [English] [SirC]

Hands-On Ranch Experience

[Michiking] Ane Taiken Saigetsu | Years of The Older Sister Experience (COMIC Anthurium 2016-05) [English] [PSYN] [Digital]

上学途中遭遇转角KISS的可能性有多大？实验 |Toko Tochu no Deai Gashira no Guzen Kiss wa Ariuruka? - The "Can an Accidental Collision on the Way to School Result in a Kiss?" Experiment

[RaTe] Ane to Megane to Milk - Sister, glasses and sperm. [English] [TCup]

TS Rinkan Sakusei: Zenpen | Gender Bender Gangbang Sperm Milking part1

(C70) [G's studio (Kisaragi Gunma)] Experiment 1 (KimiKiss) [English] [Yoroshii]

[Minekawa Reeko] Hatsu Taiken THE FIRST EXPERIENCE

[Spermation (Tukamori Syuuji)] Himitsu 01 "4-gatsu no Owarigoro" | Secret 01 - The end of April [English] [Digital]

(C82) [MAGIC MACHINERY (RT.)] fuka experience (Yotsubato!)

SPERM BLOCKER

[Nyanko Batake (Murasaki Nyaa)] Starships Experience Complete [Chinese] | 宇宙飞船体验号 前篇+后篇【飞天恶女希尔达·博格恶意汉化】

[Yasuhara Tsukasa] My first experience was OO [Chinese]

Parasite Experiment

(C94) [50on! (Aiue Oka)] Saimin Seishidou 4 Ninshin Taiken Shidou (Shi) | Hypnosis Sex Guidance 4 - Pregnancy Guidance Experience [English] {Doujins.com}

Kankaku Shadan Jikken Shippai | Failed Sensory Deprivation Experiment

[Koppamu] Zetsurin Hishou Spermax ~Kirishima Nabiki no Baai~ | 绝伦飞翔斯佩尔马库斯 ~雾岛娜美树篇~ (Seigi no Heroine Kangoku File Vol. 7) [Chinese] [星月汉化] [Digital]

Hairyokan de no Ero Kyoufu Taiken | A Terrifying Erotic Experience at an Abandoned Inn

[Aomushi] TS Rinkan Sakusei: Zenpen | Gender Bender Gangbang Sperm Milking part1 (COMIC Unreal 2019-08 Vol. 80) [Chinese] [沒有漢化][Digital]

Swallow Experience

Futanari Mr. VR experience

[Higuma-ya (Nora Higuma)] Toaru Gakkou no Fudeoroshi Jijou | The Circumstances Around a Certain School First Experience [English] [Coffedrug]

[DavidDong] - "The Divine Damsel of Devastation" VIP experience Edition

Rape Experiment

Marisa Expansion Burst

Aamiwaku no Esperman

Zetsurin Hishou Spermax

KAMEHASUTRA Minus Hanatareta Musuko no Seieki | KAMEHASUTRA - Goten Firing Out His Sperm

[Uninigumi (Unini☆Seven)] Sperm Nakadashi Online 2 (Sword Art Online) [Digital]

[Iroito] Meshimase Imouto Gal à la mode | Experience the Younger Sister Gyaru à La Mode (COMIC ExE 06) [English] [N04h] [Digital]

[Pamunosu (Koppamu)] Zetsurin Hishou Spermax ~Majuu Doku Senjou Mission~ [Digital]

[Keito no Mori (Wool)] Tomodachi to Jikken Shite Miru Hon. Kouhen | A book about experimenting with your friend, part 2 [English] {Chin²} [Digital]

[Nitta Jun] Natsu Taiken Monogatari 5 -Kouhen- | Summer Experience Stories 5 -Part 2- (Natsu Taiken Monogatari [2002-2007]) [English]

Summer Comic Book, Morgan's Sweetly Punished Swollen Tits Paizuri Sperm!

Paizuri Sakusei Slime ni Makeru Manga | A manga about losing to a sperm extracting slime's paizuri

[Hisui, Yamu] 2D Comic Magazine Futanari Shokushu Sakusei Shasei Kairaku ni Oboreru Heroine-tachi | 2D Comic Magazine Futanari Tentacle Sperm Squeezing - The Heroines Who Drown In The Pleasure Of Ejaculating Vol. 2 Ch.1-2 [English] [Doujins.com] [Digital]

(C77) [Todd Special (Todd Oyamada)] SPERMA3P (Persona3 Portable) [English] [CGrascal/One of a Kind Productions]

Shikyuu Seishi Kudasai | Please Give Me Sperm

[TANABE] Ougon Taiken! - Gold Experience + Motto Ougon Taiken! (Chichi Zakari) [English] [jhenier13]

Hatsutaiken kara Isshuukan | First Week Experience

Amazuppai Keiken | Sweet & Sour Experience

Sperma Nakadashi Online 004

(C87) [Kuroi Mikan no Naru Momo no Ki (Koromo)] Shokugeki no Sperm (Shokugeki no Soma)

Ore ga Dairi Tanetsuke Suru Koto ni Natta Hitozuma Tachibana Shizuka-san wa Nannimo Shiranai! | Shizuka Tachibana, the Housewife Who Collects My Sperm Donations, Doesn’t Know a Damn Thing!!

[Kanno Takashi] Alien Experiment (COMIC Orga Vol. 01) [Chinese] [牛肝菌汉化]

[Cock-a-Doodle-Doo (Morikawa)] Seikyouiku Genchi Jisshuu Seido | Sexual Education Practical Experience Training System [English] [Tremalkinger]

Tsukumo Gou (BOX) - Katsuo's First Sexual Experience [ENG]

Paizuri Sakusei Slime ni Makeru Manga | A Manga About Losing to a Titfucking, Sperm Extracting Slime

(C54) [studio AQA (FUGO)] Spermulti (To Heart)

[Neko Mode] Let's Make An Experience (COMIC Purumelo 2013-02) [English] [Kameden]

[Kamirenjaku Sanpei] Tonari no Sperma san

[Umenonukaduke (Umeran)] Experiment (Neon Genesis Evangelion) [Digital]

[Michiking] Ane Taiken Jogakuryou 1-3 | Older Sister Experience - The Girls' Dormitory [English] [Yuzuru Katsuragi] [Digital]

Himitsu 04 "Yakusoku"

[Oda non] Yukemuri Shotaiken | Steamy First Experience (COMIC HOTMiLK 2008-10) [English] [q91]

[Sakazaki Freddie] Mitsuko-chan no nyuugyuu taiken-ki | Mitsuko's Experience as a Milk Cow (COMIC Shingeki 2013-02) [English] [thetsuuyaku]

[Akitsuki Itsuki] Tousaku Saimin Jikken [Case. 4] | Perverted Hypnosis Experiment [Case. 4] (Tousaku Saimin Jikken - Nakadashi Oshioki Bukatsudou) [English] [desudesu]

[Nuigurumiya-san (Various)] Touhou Futanari Kyodai Seishi Goudoushi (Touhou Project) [Digital]

VS Experimental Subjects

First sexual experience & 2 weeks later

Kyoushi Taiken | The Teacher Experience

Seikyouiku Genchi Jisshuu Seido | Sexual Education Practical Experience Training System

Bradamante Sperm Brothers

(C58) [BLACK DOG (Kuroinu Juu)] GOLD EXPERIENCE (Bishoujo Senshi Sailor Moon) [English]

Jikken Shimai Experiment Sisters

(C73) [Chokudokan (Hormone Koijirou, Marcy Dog)] SPERMA ANGELS 3 (ToHeart 2, VOCALOID)

(CR35) [D'ERLANGER (Yamazaki Show)] Ichigo ∞% 1: First Experience (Ichigo 100%)

[ぽっこら] 対魔忍 不知火 ()

[Kirsi Engine (Kirsi)] Sperm Of The Gerudo (The Legend of Zelda: Breath of the Wild) [Ongoing] [English]

(C86) [Condiment wa Hachibunme (Maeshima Ryou)] Happiness experience (Happiness Charge Precure!) [Chinese]

(C85) [Spermation (Tamatsuyada, Satou Kimiatsu)] Energy Kyo-ka!! Soushuuhen 2 Manguri Hen

[RaTe] Ane to Megane to Milk | Sister, Glasses and Sperm

(C87) [Nobita Graph (Ishigana)] IT WAS A good EXPERiENCE (Aikatsu!)

Extreme Sexual Torture Human Experiment 1

[Shono Kotaro] Houkago Experience | Afterschool Experience (COMIC Masyo 2014-04) [English] {Crystalium}

Sweetest Experiments

[Misawa Hiroko] Onee-san no Fude Oroshi | First Sexual Experience With Sister (COMIC Himezakura 2005-04 Vol. 004) [English] [HT Manga]

Bradamante Sperm Brothers

Udon-ge Ninshin Jikken | Udonge Pregnancy Experiment

Sperm-star Ch.06

[Takanaru] Jikkentai "Punky poppet" | Punky Poppet Experiment (Elsword) [English] [Decensored]

Tomodachi to Jikken Shite Miru Hon. Kouhen | A book about experimenting with your friend, part 2

Kyodaika Kanojo to Hajimete no Kyodaika Play | First Giant Play Experience with my Enlarged Girlfriend

B.O.W. to Hito tono Kouhai Jikken Houkokusho | B.O.W And Human Crossbreeding Experiment Report

(COMIC1☆7) [GENETRIX (GEN)] sperma card attack!! Eiyashou Mokou Hen SP (Touhou Project) [English]

Viper V-1 - Rati's Sperm Memorial (eng)

(C75)[Chokudokan (Hormone Koijirou, Marcy Dog)] SPERMA ANGELS 4

[BLAZE (Scotch)] Golden Experiment Ver. 0 (KimiKiss) [Digital]

(C86) [Uninigumi (Unini☆Seven)] Sperm Nakadashi Online 3 (Sword Art Online)

[Michiking] Ane Taiken Shuukan | The Older Sister Experience for a Week Ch. 1-3 [English] [PSYN] [Digital]

Emergency Broadcast! Fearful Human Experiments by EBA - Pursuing the Mystery of Area 69

TS Rinkan Sakusei: Zenpen | Gender Bender Gangbang Sperm Milking part1

In a world where there are extremely few men, sperm is a precious resource. Part 2

Mikogami's diaper experience

(C87) [Kuroi Mikan no Naru Momo no Ki (Koromo)] Shokugeki no Sperm (Shokugeki no Soma) [English] [rookie84]

(C79) [Carrot Works (Hairaito)] Sperma & Sweets with Villager (Panty & Stocking with Garterbelt) [English] [Little White Butterflies]

Ooicchi no Ijiwaru Fudeoroshi | Ooicchi's a Meanie, A Man's First Experience

[Moriya Neko] SPERM SHOWER

[Hayashida Toranosuke] Mesuinu Taikenki | Bitch Experience Note (Nyotaika Happiness!) [English] {N04h}

Sperm-star Ch.07

(C79) [St. Rio (Kitty, Naoki)] Toaru Majutsu no Sperma Interceptor 1 (Toaru Majutsu no Index) [English] [EHCOVE]

[Michiking] Ane Taiken Shuukan | The Older Sister Experience for a Week Ch. 1-2 [English] [PSYN] [Digital]

(SC65) [Nukidamari (DENSUKE)] Spermanager Kiyoko-san (Haikyuu!!)

B.O.W And Human Crossbreeding Experiment Report

[Espoir no Okashi (Pokoten)] 1-nichi Nyuugyuu Taiken ~Oishii Milk ga Dekiru made~ | 1-Day Ranch Experience ~Let's Get Some Delicious Milk!~ [English] [Digital] version B

Bradamante Sperm Brothers

[Ebi Fry Teishoku] Seishun Hatsutaiken | First Experience Of Youth (COMIC Anthurium 2022-06) [English] [Sonarin迫] [Digital]

Mesui Experience 2

[Uninigumi (Unini Seven, Mizutani Rin)] Sperma Nakadashi Online 004 (Sword Art Online) [Digital]

Sperma4

[Shindou Hajime] Impregnation Experiment Ania (Nakadashi Haramase Vol. 4) [English] =LWB=

[Zucchini] Sperma hunter (Comic Unreal 2014-10) [Chinese] [無邪気漢化組]

Zetsurin Hishou Spermax Hana Peropero Majuu ni Goyoujin!?

[Michiking] Ane Taiken Jogakuryou 1-6 | Older Sister Experience - The Girls' Dormitory [English] [Yuzuru Katsuragi] [Digital]

[Can Do Now! (Minarai Zouhyou)] B.O.W. to Hito tono Kouhai Jikken Houkokusho | B.O.W And Human Crossbreeding Experiment Report (Resident Evil) [English] [SaHa]

[Michiking] Ane Taiken Jogakuryou 1-5.5 | Older Sister Experience - The Girls' Dormitory [English] [Yuzuru Katsuragi] [Digital]

[Drill Jill] Spermaniax | 白濁淫汁狂熱愛好 [Chinese]

(C94) [Umi no Sachi (Suihei Sen)] Onekatsu no Susume | The Big Sister Experience Recommendation [English] [Redlantern]

Sperm donation

[Michiking] Ane Taiken Jogakuryou 1 | Older Sister Experience - The Girls' Dormitory (COMIC Anthurium 2017-04) [English] [Yuzuru Katsuragi] [Digital]

[Mink] [Full Color Seijin Han] Yakin Byoutou・San Experiment.1 Complete Ban [Digital]

(SC65) [Nukidamari (DENSUKE)] Spermanager Kiyoko-san (Haikyuu!!)

Persona 3 - Sperma3p

(C58) [BLACK DOG (Kuroinu Juu)] GOLD EXPERIENCE (Sailor Moon) [2nd Edition]