A masturbation toy for girls developed by a dark pediatrician.
[Developers (Nagasode)] Sepia-chan wa Choukyou Machine no Ejiki ni Narimashita. [Digital]
[R-gen] Seishoku Kaihatsu Torawareta Elf no Choukyou Jikken | Sexual Development - Torture Training of Captured Elf (Mesu Hana ga Ochiru Toki) [English] [MTL] [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]
[MM] Deep Kiss Development Story (Hoshikawa Sara)
[Muchakai (Mucha)] Mako-chan Kaihatsu Nikki 2 -Netorare… Itsuwari no Shotaiken- | Mako-chan's Development Diary 2 [English] {2d-market.com} [Decensored] [Digital]
Roleplay
Boku no Xie Mama
(C86) [Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki | Chizuru-chan's Development Diary [English] =Lost Light+Funeral of Smiles+LWB
Jouyoku Identity
Seishoku Kaihatsu Torawareta Elf no Choukyou Jikken | Sexual Development - Torture Training of Captured Elf
[Developers (Nagasode)] Eve-chan wa Shokushu Pants no Ejiki ni Narimashita. 2 [English] {Hennojin} [Digital]
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
Konna Watashi de Ii desu ka!?
Chizuru-chan Kaihatsu Nikki 3 | Development Diary Ch.7 – Chizuru-chan Development Diary 3 {2d-market.com}
[acura] Gouyoku Hoteru [Fumuke] ※ Kyapu Hitsudoku
[Mucha] Chizuru-chan Development Diary Full Color; Part One [English] {2d-market.com} [Decensored] [Digital]
A Professors Theory on Love and Sex Reassignment Surgery
[Silicon Jichou (Condessa)] Danseiki Roshutsu Jidori-han no Shoutai wa Kanojo dake ga Shitteiru. | She is the Only One Who Knows The Identity of the Dick-Swinging Selfie-Taking Criminal [English] {Doujins.com} [Digita
(C87) [Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki 2 | Development Diary Ch.6 – Chizuru-chan Development Diary 2 [English] {2d-market.com}
(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]
(C86) [Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki | Development Diary Ch.5 – Chizuru-chan Development Diary 1 [English] {2d-market.com}
(C65) [ARTRON (shima)] intelligence/identity (Uchuu no Stellvia)
(C66) [SUBSONIC FACTOR (Ria Tajima)] The steady-state theory (Fullmetal Alchemist)
Fuzzy Theory
Na to Ha to Ichaicha Ecchi Suru Hon
[Medaka Kenichi] Hatsuiku Yokujou | Development Bath (COMIC LO 2007-02) [English] [Bakachin Manga Translations™] [Incomplete]
Rurou no Aka
Scapegoat Koufukuron | Scapegoat Theory of Happiness
(C88) [Muchakai (Mucha)] Chizuru-chan Kaihatsu Nikki 3 | Development Diary Ch.7 – Chizuru-chan Development Diary 3 [English] {2d-market.com}
[Shoryutei Enraku] Seishin Kaihouron | The theory of releasing your real self (Nozoite wa Ikenai 7 - Do Not Peep! 7) [English] [Quick and easy translations]
Noraneko Shoujo to no Kurashikata | 與野貓少女一起生活的方法 Ch. 22-34
(COMITIA97) [Muchakai (Mucha)] Chii-chan Kaihatsu Nikki | Chii-chan's Development Diary [English] {Doujin-moe.us}
Berochuu Kaihatsu suru Hanashi | Deep Kiss Development Story
[Shimaji] Seicho Kiroku -Zenpen- | Souma's Sex Development Record - Part 1 (Koushoku Shounen Vol. 07) [English] [Decensored] [NewsMedia]
Chizuru-chan's Development Diary 2
Chii-chan's Development Dairy 4
Mercury Development Plan
Minna no Meshitsukai Kaihatsuchuu desu | Everyone's Servant Is in Development
Maruhiden! Ayame Inpouchou! | Forbidden Secret Chronicle! Ayame's Lewd-Arts Album!
[★] R18 Sagu Yatoi (Abasuto) Web Sairoku
(C85) [Muchakai (Mucha)] Chii-chan Kaihatsu Nikki 4.1 | Chii-chan's Development Diary Epilogue [English] {doujin-moe.us}
[mdo-h] DEVIL'S BORN (Soutaisei Virgin Theory) [Chinese]
Development Diary Ch.3 – Chii-chan Development Diary 3
僕の私の木曾合同
(C96) [White Identity (よろず)] 僕の私の木曾合同 (艦隊これくしょん -艦これ-)
[Developing Person(Hatten Tojounin)] Pink Slime [English] [head empty] [Digital]
tawamuretoyobunaraba
[Pennel] クラスメイトの紀村さんはおっぱいが大きい (COMIC 快楽天ビースト 2021年9月号) 中文翻譯
[mdo-h] Soutaisei Virgin Theory [Digital]
Chii-chan Kaihatsu Nikki Color Ban | Chii-chan Development Diary Full Color Collection
Innocence1 - Theory
[Mira] Kodomo no Riron | A Kid’s Theory (School Girls Love Selection) [English] {Hennojin}
Muchikko Succubus Choukyou Kaihatsu | An Innocent Succubus' Development Training
[Hiura] [Web Sairoku]
[acura] [ENG] Hymn for the Stallion
Happy Lucky Happening!!
Development Diary Ch.1 – Chii-chan Development Diary 1 {2d-market.com}
Shinseki no Onnanoko ga Kyuuseichou Shite Bakunyuu ni Narimashita | A relative of yours develops suddenly and gets MASSIVE TITS
(Reitaisai 11) [Hadairo Rooibos Tea (Pandain)] Shokushu Chireiden 2~Satori Expansion Development~ (Touhou Project)
[bifidus] Hikari-san Kaihatsu Nisshi | Hikari-san's Development Diary (Kimi o Sasou Uzuki Ana) [English] [Digital]
Huasanorori 1# Anniversary English
[sawacream] Mahoutsukai Lyrica 2 ~ Kyokugen made H ni Kaihatsu Sareta Oppai ~ | Magician Lyrica 2 ~ H-Developed Tits To The Extreme ~ [English]
GOOD NIGHT
Empty Theory 6 - Hearts Scheme
[Mujitan (Tsumugie)] Kyonyuu Kuchikukan Hatsuiku Chousa Shirei San | Big Titty Destroyers' Development Survey Order (Kantai Collection -KanColle-) [English] {DKKMD Translations} [Digital]
Shirokuro-san ni Nukareru Osame no Hon
Tatakarete Yorokobu Hito Nakadashi Manga
[Nekohakushaku] Boku no Mama-chan (43) Kaihatsu Nikki 1 | The development diary of my Mama-chan 1 [English] [Pandora's actor]
Exorcist-kun wa Gekka no Mono desu!
JK Cumdump Development 2 | JK육변기 육성일지2
Empty Theory 5 - Advantage
The story of Shota, who was developed by Mesuiki when trying to sleep rape a tutor
Kimi to no Shukumeiron - The theory of fate with you. | 與妳的宿命論
Kishinami: Marine Snow
Chii-chan's Development Dairy 3
Ima kara Anata wa Onanie Ningyou desu
Seme ni Naritai Tora
A Kid’s Theory
[Medaka Kenichi] Hatsuiku Yokujou | Development Bath (COMIC LO 2007-02) [English]
Development Diary Ch.2 – Chii-chan Development Diary 2 {2d-market.com}
Orcs and juvenile ω love evolution theory
Sepia-chan wa Choukyou Machine no Ejiki ni Narimashita. 2
(Knights Theory) [Snow Peach (Mipoko)] Naru no Anal kara Inspiration ga Waite Kuru zo (Ensemble Stars!)
Sixth: Focused Production Development
At public bath with a well-developed classmate
[Theory of HEAVEN (CROW)] Onikuya Ken-chan (Anyamaru Tantei Kiruminzoo) [Digital]
軽巡ノスゝメ
(C92) [Aidentity (Keyspace)] Shiratsuyu Musume 2 (Kantai Collection -KanColle-)
[Developers (Nagasode)] Eve-chan wa Shokushu Pants no Ejiki ni Narimashita. | Eve-chan Fell Prey to the Tentacle Panties. [English] {Hennojin} [Digital]
Kimi ni Somaru Yotei
[Crow_Theory of Heaven] Gurren Lagann Shimo-kyun Haa Haa Hon Hadaka Negai (Gurren Lagann) [Raw]
Itaiamai | 痛苦的甜蜜 Ch. 1-12
Chizuru-chan Kaihatsu Nikki 2 | Development Diary Ch.6 – Chizuru-chan Development Diary 2 {2d-market.com}
Soutaisei Virgin Theory
[Rohgun] Eroge o Tsukurou! Genteiban - Let's develop the adult game together | 一起來製作情色遊戲! 限定版 [Chinese]
[SURREAL] hanahirakukiminiyoriirozuku (identity V)
[黄花鱼罐头2.0] 【免费委托】被捉住的求生者三人(中文/英文/日语)
(COMITIA98) [Muchakai (Mucha)] Chii-chan Kaihatsu Nikki 2 | Development Diary Ch.2 – Chii-chan Development Diary 2 [English] {2d-market.com}
[SERVICE BOY (Hontoku)] Jun'ai Mandara Chitai Sarashi (Identity V) [English] [nekoumancer]
[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]
[Aiirosakura (Aikawa Ryou)] Kuubo Wo-Kyuu-chan no Shimakaze Yuri Dorei Choukyou ~Anal Kaihatsu Hen~ | Standard Carrier Wo-Class Shimakaze's Yuri Slave Training ~Anal Development~ (Kantai Collection -KanColle-) [English] [B.E.C. Scans] [Digital]
Futanari Choukyoushi ni Kaihatsu Sareru Shota | Boys Getting Developed by Futanari Trainers
SUPPLEMENT AND DEVELOPMENT
Development Diary Ch.3 – Chii-chan Development Diary 3 {2d-market.com}
[Developers (Nagasode)] Ima kara Anata wa Onanie Ningyou desu [Chinese] [有条色狼汉化]
Tomodachi to Kaihatsu Shite Miru Hon. | A book about trying to develop your sensitivity with your friend