[Muchakai (Mucha)] Mako-chan Kaihatsu Nikki 2 -Netorare… Itsuwari no Shotaiken- | Mako-chan's Development Diary 2 [English] {2d-market.com} [Decensored] [Digital]

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

[Developers (Nagasode)] Eve-chan wa Shokushu Pants no Ejiki ni Narimashita. 2 | Eve-chan Fell Prey to the Tentacle Panties. 2 [English] [Digital]

[MM] Deep Kiss Development Story (Hoshikawa Sara)

Seichou Nikki | Sexual Development Journal

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

Tatakarete Yorokobu Hito Nakadashi Manga

[Theory of HEAVEN (CROW)] Onikuya Ken-chan (Anyamaru Tantei Kiruminzoo) [Digital]

Hikari-san Kaihatsu Nisshi | Hikari-san's Development Diary

[Muchakai (Mucha)] Chii-chan Kaihatsu Nikki 3 | Development Diary Ch.3 – Chii-chan Development Diary 3 [English] {2d-market.com}

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

Hellbitch Endemic: Acute Libido Developmental Syndrome

Android Development Diary

[Developers (Nagasode)] Sepia-chan wa Choukyou Machine no Ejiki ni Narimashita. [Chinese] [不咕鸟汉化组] [Digital]

[Muchakai (Mucha)] Mako-chan Kaihatsu Nikki 2 -Netorare… Itsuwari no Shotaiken- | Mako-chan's Development Diary 2 [English] {2d-market.com} [Decensored] [Digital]

A Kid’s Theory

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

[Ootani Mikoto] Seishun Kanjouron - youth emotion theory [R18 Ban] 1

(Reitaisai 11) [Hadairo Rooibos Tea (Pandain)] Shokushu Chireiden 2~Satori Expansion Development~ (Touhou Project)

(C86) [Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki | Chizuru-chan's Development Diary [English] =Lost Light+Funeral of Smiles+LWB

Mercury Development Plan

(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]

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

[Muchakai (Mucha)] Chii-chan Kaihatsu Nikki Color Ban | Chii-chan Development Diary Full Color Collection [English] {2d-market.com} [Decensored] [Digital]

[Developers (Nagasode)] Kaeshite! Boku no Clitoris 2 Inma no Iinari Dosukebe Choukyou | My Clitoris 2: The lewd devil's humilating training [English]

Crow (Theory of Heaven) - Honey Kami the 2nd vol.0.7

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

Elements1 - Theory

[Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki Zenpen ~Kataomoichuu no Sensei no Tame, Chuunen Kyoushi ni Hamerareru Junjou Yuutousei~ | Chizuru-chan Development Diary Part One [English] {2d-market.com} [Decensored] [Digital]

[Corundum] Tai Mesugaki-you Energy Drink o Kaihatsu Shita Loli Vinci-chan | Lolinchi-chan developed an anti-msgk energy drink (Fate/Grand Order) [English] [The Blavatsky Project]

Chii-chan's Development Dairy 1

SUPPLEMENT AND DEVELOPMENT

Big Breasts Flat Theory

[sawacream] Mahoutsukai Lyrica 2 ~ Kyokugen made H ni Kaihatsu Sareta Oppai ~ | Magician Lyrica 2 ~ H-Developed Tits To The Extreme ~ [English]

A masturbation toy for girls developed by a dark pediatrician.

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

Chizuru-chan Kaihatsu Nikki 4 | Development Diary Ch.8 – Chizuru-chan Development Diary 4 {2d-market.com}

Wakiman 2 Mr. Wakishita seconded to the development department

[Developers (Nagasode)] Sepia-chan wa Choukyou Machine no Ejiki ni Narimashita. [Digital]

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

Innocence1 - Theory

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

Fuzzy Theory

Chizuru-chan Kaihatsu Nikki 4 | Development Diary Ch.8 – Chizuru-chan Development Diary 4

JK Cumdump Development 2 | JK육변기 육성일지2

(Reitaisai 19) [Rocket Chousashitsu (Koza)] Nitori-san wa Kaihatsuchuu | Nitori-san is Developing (Touhou Project) [English] [Haj3]

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

Chizuru-chan's Development Diary 2

[Rohgun] Eroge o Tsukurou! Genteiban - Let's develop the adult game together

[Noise] Short Pants no Onnanoko no Hatsuiku ga Yosugiru Ken ni Tsuite | Concerning the Matter of the Abnormally Rapid Development of Girls Who Wear Short Pants [English] {5 a.m.}

(SC2015 Autumn) [CHRONOLOG, D.N.A.Lab. (Sakurazawa Izumi, Miyasu Risa)] Super String Theory (Kantai Collection -KanColle-)

[Mira] Kodomo no Riron | A Kid’s Theory (School Girls Love Selection) [English] {Hennojin}

[Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki Swapping Battle Hen | Chizuru-chan Development Diary Extra [English] {2d-market.com} [Decensored] [Digital]

[Developers (Nagasode)] Sepia-chan wa Choukyou Machine no Ejiki ni Narimashita. | Sepia-chan Fell Prey to the Training Machine [English] {Hennojin} [Digital]

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

Chizuru-chan Kaihatsu Nikki | Chizuru-chan's Development Diary

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

[Nekohakushaku] Boku no Mama-chan (43) Kaihatsu Nikki 1 | The development diary of my Mama-chan 1 [English] [Pandora's actor]

Chii-chan's Development Dairy 4

Futari wa Choukyou Game no Ejiki ni Narimashita. 2 | Two Girls Fall Prey to a Sexual Training Game 2

Empty Theory 3 - Cousin

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

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

(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]

(C88) [Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki 3 | Development Diary Ch.7 – Chizuru-chan Development Diary 3 [English] {2d-market.com}

[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]

[Shoryutei Enraku] Seishin Kaihouron | The theory of releasing your real self (Nozoite wa Ikenai 7 - Do Not Peep! 7) [English] [Quick and easy translations]

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

Tanoshii Seieki Bokujou -Kaihatsu Hen-｜Happy Semen Farm -Development Branch-

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

Chizuru-chan Kaihatsu Nikki 3 | Development Diary Ch.7 – Chizuru-chan Development Diary 3 {2d-market.com}

Soutaisei Virgin Theory

Chizuru-chan's Development Diary

tsuyo Sō jū musume 1 ST LIEUTENANT HATANACA

Orcs and juvenile ω love evolution theory

Sepia-chan wa Choukyou Machine no Ejiki ni Narimashita. 2

Jibun demo Bikkuri shita Onna Omake 2-page

[mdo-h] Soutaisei Virgin Theory [Digital]

[Okano Ahiru] Hanjuku Developer - The immature developer

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

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

[Medaka Kenichi] Hatsuiku Yokujou | Development Bath (COMIC LO 2007-02) [English] [Bakachin Manga Translations™] [Incomplete]

(C86) [Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki | Chizuru-chan's Development Diary [English] [Doujin-Moe]

Tomodachi to Kaihatsu Shite Miru Hon. | A book about trying to develop your sensitivity with your friend

Futari wa Choukyou Game no Ejiki ni Narimashita. 2

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

Berochuu Kaihatsu suru Hanashi | Deep Kiss Development Story

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

At public bath with a well-developed classmate

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

[Marui Maru] Echiechi Seichou Kiroku 1-2 | Naughty Development Diary 1-2 [English] [Xzosk] [Digital]

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

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

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

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

[Developers (Nagasode)] Futari wa Choukyou Game no Ejiki ni Narimashita. | They Both Fell Prey To The Training Game. [English] {Hennojin}

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

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

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

Empty Theory 7 - Destroyed Family

[Solar System Development Organization (Kinako)] Sleeping Monster (Durarara!!)

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

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

[Muchakai (Mucha)] Chii-chan Kaihatsu Nikki 3 | Chii-chan's Development Diary 3 [English] {Doujin-moe.us}

Fuko no Konsui Rape - Seicho Kiroku | Father Daughter Unconscious Rape : The Development Records

(COMIC1☆6) [Crazy9 (Ichitaka)] Zessica no Koufukuron | Zessica's Theory of Happiness (Aquarion Evol) [English] [biribiri + Doujin-Moe.us]

[Developers (Nagasode)] Eve-chan wa Shokushu Pants no Ejiki ni Narimashita. | Eve-chan Fell Prey to the Tentacle Panties. [English] {Hennojin} [Digital]

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

[bifidus] Hikari-san Kaihatsu Nisshi | Hikari-san's Development Diary (Kimi o Sasou Uzuki Ana) [English] [Digital]

Uesugi Tsukasa wa Kaihatsu Sareteiru | Uesugi Tsukasa is being developed

Secret XX Development

Rem no Koufuku H Ron | Rem's Happiness H Theory

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

Development Diary Ch.2 – Chii-chan Development Diary 2

Mesu Danshi Ecchi Manga Tsumeawase

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

Kaeshite! Boku no Clitoris Ero Trap ni Torawareta Mahoutsukai | GIve it back, my clitoris! A mage caught in an ero-trap.

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

(C91) [Roubai-tei (atahuta)] Tanoshii Seieki Bokujou -Kaihatsu Hen-｜Happy Semen Farm -Development Branch- (Brave Witches) [English]

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

Chii-chan's Development Diary Epilogue

Develop You!

JK육변기 육성일지 | JK-CumDump Development Diary

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

Development Diary Ch.3 – Chii-chan Development Diary 3

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

Muchikko Succubus Choukyou Kaihatsu | An Innocent Succubus' Development Training

(C84) [Muchakai (Mucha)] Chii-chan Kaihatsu Nikki 4 | Chii-chan's Development Diary 4 [English] {Doujin-moe.us}

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

(C95) [OrangeMaru (nodoco)] Christmas no Seishouseki (Fate/Grand Order) [English] {The Ancient Hentai Theory}

(C87) [Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki 2 | Chizuru-chan's Development Diary 2 [English] [Doujin-Moe]

Ima kara Anata wa Onanie Ningyou desu

Higurashi CG Shuu Seisakuchuu | Higurashi CG under development

Empty Theory 2 - Sky High

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

[Shimaji] Seicho Kiroku -Zenpen- | Souma's Sex Development Record - Part 1 (Koushoku Shounen Vol. 07) [English] [Decensored] [NewsMedia]

Happy theory