Dance! Tentacle Research Institute
Seisaikei Imouto | My Stepsister, The Housewife Material
Stepsister Absolute
(C72) [Luciferhood (Uchoten)] MintMagic (Death Note) [English]
[Noise] Chinko no Jiyuu Kenyuu | Dick Research Project (COMIC LO 2019-05) [English] [Doki Fansubs] [Digital]
Movie Research Lovers
Kamiyama Koukou Omanko Kenkyuukai Katsudou Kiroku | Kamiyama Highschools Vagina Research Society Activity Record
[Shinsekai Set (Hetaren)] Kurodate o Shiro ni Someru Seishoku Kenkyuu o (Blue Archive) | Sexual Gourmet Research: Dyeing Kurodate White [English] [Douzo Lad Translations]
[Hroz] Succubus no Ningen Kenkyuu | Human Research by a Succubus [English] [thetsuuyaku + 4dawgz]
[Shinobu Tanei] Little Stepsister Love Space Ch. 1-10 [English] {Tadanohito}
Little Stepsister Fantasy Virgin
Stepsister Absolute - Chapter 1
Little Stepsister Absolute Cat-ness
Erina-sama no Renai Kenkyuukai. 2 I Erina-sama's love research lab 2
[Shinobu Tanei] Imouto Shojo Gensou | Little Stepsister Fantasy Virgin Ch. 1-5 [English] [Tadanohito]
[Zenmai-shiki Kouchuusen (Fukami Otoha)] Tsuiraku Shoujo [Digital]
Jiyuu Kenkyuu de Ochinchin o Shiraberaremashita | We Decided to Examine a Penis for Our Independent Research
[Kawai Shun] Odoru! Shokushu kenkyūjo (Omake manga) | Dance! Tentacle Research Center (Bonus Comic) [English]
(C74) [Tsurupeta (Various)] Tsurupeta Kenkyuu Houkokusho "Kakyuu Sentou In no Isshou" - Turupeta Research Report
Stepsister Absolute - Chapter 2
Futanari Kenkyuu Dousoukai | Futanari Research Club
Binyuchousain Ayako | Busty Researcher Ayako
[Shinobu Tanei] Little Stepsister Love Space Ch. 1-5 [English] {Tadanohito}
(C77) [Tsurupeta (Various)] Tsurupeta Kenkyuu Houkokusho "Shin Hissatsu Waza no Kyoufu " - Turupeta Research Report
JS Kenkyuukai | JS Research Seminar
Little Stepsister's Plea for Training
(COMIC1☆11) [Showa Saishuu Sensen (Hanauna)] Kamiyama Koukou Omanko Kenkyuukai Katsudou Kiroku | Kamiyama Highschools Vagina Research Society Activity Record (Hyouka) [English] [Doujins.com]