Development Gottman Theory

Kodomo no Riron | A Kid’s Theory

A Kid’s Theory

[Crow_Theory of Heaven] Gurren Lagann Shimo-kyun Haa Haa Hon Hadaka Negai (Gurren Lagann) [Raw]

InCha Otaku no Boku to YouCha Otenba Kanojo no Icha Love Yarimakuri Seichouki | Development Records of An Asocial Otaku and a Brown Tomboy Going At It Over And Over

Development Diary Ch.3 – Chii-chan Development Diary 3 {2d-market.com}

Empty Theory 7 - Destroyed Family

Chii-chan's Development Dairy 2

Futaba841 (Mitsuya Yoguru) - The Love and Pleasure Theory for Boys [ENG]

Innocence1 - Theory

Tatakarete Yorokobu Hito Nakadashi Manga

[Mujitan (Tsumugie)] Kyonyuu Kuchikukan Hatsuiku Chousa Shirei San | Big Titty Destroyers' Development Survey Order (Kantai Collection -KanColle-) [English] {DKKMD Translations} [Digital]

tsuyo Sō jū musume 1 ST LIEUTENANT HATANACA

[Developers (Nagasode)] Kaeshite! Boku no Clitoris 2 Inma no Iinari Dosukebe Choukyou [Chinese] [不咕鸟汉化组]

(C92) [Koniro Drops (Morishima Kon)] Rironjou 3-patsu made nara Taeraremasu. - In Theory You Can Tolerate up to Three Shots (Splatoon) [Chinese] [沒有漢化]

Chii-chan Kaihatsu Nikki Color Ban | Chii-chan Development Diary Full Color Collection

Soutaisei Virgin Theory

(C91) [Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki 4 | Development Diary Ch.8 – Chizuru-chan Development Diary 4 [English] {2d-market.com}

Mesu Danshi Ecchi Manga Tsumeawase

(COMITIA97) [Muchakai (Mucha)] Chii-chan Kaihatsu Nikki | Chii-chan's Development Diary [English] {Doujin-moe.us}

Boku no Mama-chan Kaihatsu Nikki 1 | The development diary of my Mama-chan 1

Development Diary Ch.4 – Chii-chan Development Diary 4 {2d-market.com}

[Developing Person(Hatten Tojounin)] Pink Slime [English] [head empty] [Digital]

[doushoku (Hino)] Wagamama Imouto Onaho-ka Keikaku ~Neru Imouto o Kaihatsu Choukyou~ | Bratty Sister Onahole Plan ~Developing and Breaking the Sleeping Sister~ [English] [Digital]

Mei ni Anal Kaihatsu Sareru JK | Anally Developed by My Niece

(C86) [Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki | Development Diary Ch.5 – Chizuru-chan Development Diary 1 [English] {2d-market.com}

[Mucha] Chizuru-chan Development Diary Full Color; Part One [English] {2d-market.com} [Decensored] [Digital]

Big Breasts Flat Theory

Empty Theory 5 - Advantage

Chii-chan's Development Dairy 4

Futanari Choukyoushi ni Kaihatsu Sareru Shota | Boys Getting Developed by Futanari Trainers

[Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki Kouhen ~Ochita Moto Junjou Yuutousei wa, Chuunen Kyoushi no Mesuinu Onaho~ | Chizuru-chan Development Diary Part Two [English] {2d-market.com} [Decensored] [Digital]

Maruhiden! Ayame Inpouchou! | Forbidden Secret Chronicle! Ayame's Lewd-Arts Album!

Chizuru-chan's Development Diary

[Developers (Nagasode)] Ima kara Anata wa Onanie Ningyou desu [Chinese] [有条色狼汉化]

Development Diary Ch.5 – Chizuru-chan Development Diary 1 {2d-market.com}

Soutaisei Virgin Theory

[Developing Person(Hatten Tojounin)] Pink Slime [English] [head empty] [Digital]

Chii-chan's Development Dairy 3

Muchikko Succubus Choukyou Kaihatsu | An Innocent Succubus' Development Training

Empty Theory 3 - Cousin

[R-gen] Seishoku Kaihatsu Torawareta Elf no Choukyou Jikken | Sexual Development - Torture Training of Captured Elf (Mesu Hana ga Ochiru Toki) [English] [MTL] [Digital]

Elements1 - Theory

Fuzzy Theory

Kimi to no Shukumeiron - The theory of fate with you. | 與妳的宿命論

Uesugi Tsukasa wa Kaihatsu Sareteiru | Uesugi Tsukasa is being developed

A masturbation toy for girls developed by a dark pediatrician.

Development Diary Ch.1 – Chii-chan Development Diary 1

(C78) [Kinokonomi (kino, konomi)] Kinokothical Theory (Various)

(C95) [Hizatora (Kageshio)] ACTING LIKE (Fate/Grand Order) [English] {The Ancient Hentai Theory}

(C85) [Muchakai (Mucha)] Chii-chan Kaihatsu Nikki 4.1 | Chii-chan's Development Diary Epilogue [English] {doujin-moe.us}

(COMITIA98) [Muchakai (Mucha)] Chii-chan Kaihatsu Nikki 2 | Development Diary Ch.2 – Chii-chan Development Diary 2 [English] {2d-market.com}

(C84) [Muchakai (Mucha)] Chii-chan Kaihatsu Nikki 4 | Development Diary Ch.4 – Chii-chan Development Diary 4 [English] {2d-market.com}

Himitsu no xx Kaihatsu - Secret XX development | 秘密的××开发

Kareshi ja Ikenai Kyonyuu Meikko, Dai Kirai na Oji-san no Sei Kaihatsu Massage ni Ochiru | A Niece with Huge Tits who can't Cum with her Boyfriend Falls For her Hated Uncle's Sex Development Massage

(C53) [Studio Mukon (Zyaroh Akira)] SUPPLEMENT AND DEVELOPMENT (Battle Athletes Victory, ToHeart, Darkstalkers)

[mdo-h] Soutaisei Virgin Theory [Digital]

(Knights Theory) [Snow Peach (Mipoko)] Naru no Anal kara Inspiration ga Waite Kuru zo (Ensemble Stars!)

(C92) [Koniro Drops (Morishima Kon)] Rironjou 3-patsu made nara Taeraremasu. - In Theory You Can Tolerate up to Three Shots (Splatoon)

[Kakashi Asahiro] Hakase no Renai Kaizouron | A Professors Theory on Love and Sex Reassignment Surgery (COMIC Situation Play Vol. 19) [English] [4dawgz + thetsuuyaku] [Digital]

(C87) [Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki 2 | Development Diary Ch.6 – Chizuru-chan Development Diary 2 [English] {2d-market.com}

Ima kara Anata wa Onanie Ningyou desu

(C88) [Yakiniku Tabetai (Derauea)] Uzuki-chan no Suimin Kaihatsu ~Chiryou to Shoushita Honki no Kozukuri Sex~ | Uzuki-Chan's Sleep Development ~Real Baby-Making Sex Passed off as Treatment~ (THE IDOLM@STER CINDERELLA GIRLS) [English] [B.E.C. Scans]

(COMITIA97) [Muchakai (Mucha)] Chii-chan Kaihatsu Nikki | Development Diary Ch.1 – Chii-chan Development Diary 1 [English] {2d-market.com}

Development Diary Ch.5 – Chizuru-chan Development Diary 1

Imouto Saimin Kaihatsu "Karada ga Ugokanai!!" | Little Sister Hypno Development "I Can't Move My Body!!"

[Medaka Kenichi] Hatsuiku Yokujou | Development Bath (COMIC LO 2007-02) [English]

Seishoku Kaihatsu - Torawareta Erufu no Chōkyō Jikken | Sexual Development - Torture Training of Captured Elf

JK육변기 육성일지 | JK-CumDump Development Diary

(Ore no Turn 5) [Dekoboko. (Hekomi)] Develop You! (Yu-Gi-Oh! VRAINS)

Develop You!

Happy theory

K's Theory

(C93) [Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki 5 | Chizuru-chan Development Diary 5 [English] {doujins.com}

(C87) [Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki 2 | Chizuru-chan's Development Diary 2 [English] =Lost Light + Funeral of Smiles + LWB=

[Kuroiwa Menou] Hitozuma Club Bijo to Yajuu-tachi (COMIC HOTMILK 2020-05) [English] {The Ancient Hentai Theory} [Digital]

[SHINSHIN] Shinshin Nijigenron | Mind and Body Two Dimension Theory

(CR21) [Bakuhatsu BRS. (B.Tarou)] Roll-chan no Kaihatsu Nikki | Roll's Development Diary (CAPSULE COMPUTER) (Rockman DASH) [English] [Writefuck]

[Developers (Nagasode)] Kaeshite! Boku no Clitoris 2 Inma no Iinari Dosukebe Choukyou