Piagets Theory

[Emua] Sekigahara Shouji Hitodumabu Ch.1-4 [English] [biribiri]

[Zummy] Twintail de Kneesocks no Onnanoko tachi ga Kyakkya de Ufufu♥

Meshimase Gyanko no Nikutsubo Bentou

无能狂怒

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

(CCOsaka94) [Pucchu (Echigawa Ryuuka, Murata., Sahara Wataru)] Sakuranbo (Naruto) [Chinese] [黑条汉化]

K's Theory

Die in Seven Years

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

[ONEGROSS (144)] Choukou Inbou -Beat inflation- LV4EXTRA (Choukou Tenshi Escalayer) [English] [biribiri] [Digital]

[Delayder (Makinon TM)] No-Tre (THE IDOLM@STER)

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

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

Samus's Daily Life

[Ikesuga Yuuna] Real Sexdoll

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

pyuahowaitorabu shiyosample

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

Mazui Osake no Tsukurikata | How To Make a Bad Drink

Kodomo no Riron | A Kid’s Theory

Soutaisei Virgin Theory

[Koeda Mameko] Shojo Kairaku ~Oji ni Odosare Choukyou Sareru Mei~ | 处女快落 被叔叔威脅調教 (COMIC Reboot Vol. 06) [Chinese] [Digital]

Ichaicha Suruzo

[Sprechchor (Eguchi Chibi)] Oku-sama wa Moto Yariman -Besluted- 6 [Digital]

Mon Musume Ranman

A Kid’s Theory

[Nigakuriya (Nigakuri Takeshi)] Chimametai no Otoile Jijou (Gochuumon wa Usagi desu ka?) [Chinese] [檸檬茶漢化組] [Digital]

(C93) [Gessyu (Chouzetsu Bishoujo mine)] Watashi ga Mama demo Ii desu ka? (Fate/Grand Order)

HiME-Mania Vol. 4

Empty Theory 6 - Hearts Scheme

(C93) [Usoppu Land (Amayumi)] Anice ni Omakase (Sonic Soldier Borgman)

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

[Murasaki Nyanko Bar (Vae)] Shiraga no danshi koukousei ga akuyuu ni hame rarete ayashie kusuri o nomasa retara jotaika shite shimattakeredo nashikuzushi-teki ni SEX suru fun'iki ni natte iru. [Digital]

[FAKESTAR (Miharu)] LS+S (Record of Lodoss War) [Digital]

Cosplayer Kashima

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

(C88) [pinvise (Suzutsuki Kurara)] Real Intention (Amagi Brilliant Park) [Chinese] [脸肿汉化组]

[WATOSATO]Kuronge Syuurai!(touhou project)

(C92) [Kenja Time (MANA)] Fate/Gentle Order (Fate/Grand Order) [English] {doujins.com}

Komeiji Shimai wa Hentai Maso Hole

Chikan Dame Zettai. Kanzenban | Stop It You Train-Molester

Scathach Shishou to Love Love H

[GADGET (A-10)] Konna kawai ko ga onna de aru hazu ga nai!!

(Puniket 6) [OVACAS (Hirokawa Kouichirou)] AxA (Ojamajo Doremi)

(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]

Surprise Iorin Happening Iorin

Mother Daughter Hot-Spring

[Homunculus] Sakura Saku - The cherry blossom has come! | 櫻花綻放 (COMIC Kairakuten 2019-04) [Chinese] [無邪気漢化組] [Digital]

Empty Theory 7 - Destroyed Family

(COMIC1☆13) [sand (Yuu)] Azur Lane Atago no H na Hon | An Erotic Book About Azur Lane's Atago (Azur Lane) [English] [CulturedCommissions]

BOMGAKI GYARUS

(Shota Scratch 18) [Ash Wing (Makuro)] Kitsune Shuugen [English] =SW=

[mdo-h] DEVIL'S BORN (Soutaisei Virgin Theory) [Chinese]

(COMIC1☆9) [ami-dabutsu (Ami)] Chotto Mattete Miyamori-san!! (SHIROBAKO)

Empty Theory 1 - After Pleasure

[Zakotsu] Zoku Mitsumeteitai (COMIC Koh 2017-07) [English] {Hennojin} [Digital]

Fuzzy Theory

A Professors Theory on Love and Sex Reassignment Surgery

Soutaisei Virgin Theory

Boketsu o Horu 19

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

[BackyourLuck (mogO-721)] Heroine Haijoku ~5-nin no Teki ni Kawarugawaru~

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

Yokubari Sweet Angel Betsubara!

(C81) [Chokudoukan (Marcy Dog, Hormone Koijirou)] Lotte no Omocha ni Naritai Kessei Kaisan (Lotte no Omocha!)

Aoi no Mercury

[Koudansha (Kouda Tomohiro)] Service x Service (Blend S) [Digital]

(C77) [BBP (Izumi Bouko)] LOVE らぷれす (Katekyo Hitman REBORN!)

Hyper Breast Girl Rikako Chan

(C76) [apricot (Anji)] 0-G LOVERS! (Macross Frontier)

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

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

[Arakureta Monotachi (Arakure)] Rinko-san no Rinpaeki no Nagare o Yoku Suru Hon+ (Gundam Build Fighters) [English] [Brolen] [Digital]

Natsu Mankitsu! Hatsujou Otome SEX

Yakumo Ran ga Seishori Pet to Tawamureru Hon

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

[Mederukai (Yoshino Koyuki)] Ruida-san ga Arawareta! Raviel ga Arawareta! (Dragon Quest IX) [Digital]

(COMIC1☆11) [HellDevice (nalvas)] Dragonic Lolita Bomb! (Kobayashi-san-chi no Maidragon) [English]

[Maeshima Ryo] H@ppy End (Doki Doki Lolix) [English] {5 a.m.}

Renai Shikkan

NTR Request | A cuckold's request

Jiman no Bijinzuma ga Tonari ni Sumu Kimoi Otoko ni Netorareteita no o Boku dake ga Shiranai

(Futaket 12) [M.O seisakujo (Lewis McLaren)] Himeyaka Fleurage 5

COMIC Megastore H 2005-08

Happy theory

(C93) [Haiiro Koubou (Amano Kazumi) [Harmoniodeon] (NieRAutomata) [English] [EHCOVE]

[Sumomo Dou (Sumomo EX)] Vivian Bessatsu Soushuhen 2 Ichigohakusho

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

C90 Omake Meganebu

(C93) [Shinnihon Pepsitou (St.germain-sal)] KOF XIV WP Senshuken! (King of Fighters)

Ore no Gomi wa Imouto no okazu | My Sister Uses My Trash as Masturbation Material

[Mikuni Mizuki] Akujo Kousatsu - Bad girl but charming Body [Chinese] [無邪気漢化組]

Empty Theory 2 - Sky High

[mdo-h] Soutaisei Virgin Theory [Digital]

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

Sokuochi Shichau Ryouke no Mama

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

(C93) [ENNUI (Nokoppa)] Fukei na Pharaoh ga Daikouzui (Fate/Grand Order)

[Asanoya (Kittsu)] Connect Kunren wa Kusuguri de 2 (DARLING in the FRANXX) [Digital]

Empty Theory 4 - Well Definitely Meet Again

[Uchida Koneri] Mama ni Nakadashi - Die intravaginale Ejakulation zu Mutter | 媽媽被中出了 [Chinese]

Big Breasts Flat Theory

Orcs and juvenile ω love evolution theory

(Kouroumu 17) [Granberry Heaven (Reimei)] Gensou Shoujo no Seikatsu (Touhou Project)

Doing the Nasty with Young Nagato with No Actual Sex

Innocence1 - Theory

[Theory of HEAVEN (CROW)] Ikuiku! Ikuma-kun! (Black Jack) [2017-08-20]

Reiko to Kyokon Maria no Sukebe Police Sex

(COMIC1☆8) [Dennou Fuyu Mikan (Ueda Rieko)] Sekai Seifuku (VOCALOID)

Empty Theory 8 - Apparent Flash

[Mimasaka Direct (Mimasaka Hideaki)] HEROINE FALL

Seihuku Yukarin to H Shitai!!

Seichouki After

Koi suru Epuron

Afureru Ai

(C66) [SUBSONIC FACTOR (Ria Tajima)] The steady-state theory (Fullmetal Alchemist)

(C79) [Niku Ringo (Kakugari Kyoudai)] Nippon Impossible 2 (Street Fighter) [English] [SaHa] [Colored]

[Sevengar] Haisenkoku No Sister, Goblin To Kekkon Saserareru

[Achumuchi] Alternative Friends ~Intelli Bitch no Omanko Zanmai na Seishun~ [Chinese]

Hakase no Renai Kaizouron | A Professors Theory on Love and Sex Reassignment Surgery

(C92) [Tetsukazuno Ao. (Emilio)] Sake wa Nondemo (Girls und Panzer)

COMIC Men's Young Special Marugoto Issatsu Kyonyu Jyokyoushi !! 2006-11

(C76) [Toraya (ITOYOKO)] Toaru Omeko ni Railgun 4 (Toaru Kagaku no Railgun)

[Hinaki] Kukkorose no Himekishi to nari, Yuri Shoukan de Hataraku koto ni Narimashita. 8 | Becoming Princess Knight and Working at Yuri Brothel 8 [English] [Hurakano]

Imasara Dirty Pair Vol.1

Empty Theory 5 - Advantage

Elements1 - Theory

(C64) [Kokushi Tenshi (Various)] SPACE STRING THEORY (Uchuu no Stellvia)

[Hiraya Nobori] Loli Kantetsu

(FF25) [Klotski (Matsukasa)] Chotto Iikagen Hanashite Kudasai Seo-senpai!!! | 我說ー請妳快點鬆手吧！瀨尾學姊！ (Gekkan Shoujo Nozaki-kun) [Chinese]

JINX Come On! Shoot Faster

Natsu to kanojo to ×× to × × ver. MFate/Grand Order)sample

Scapegoat Koufukuron | Scapegoat Theory of Happiness

A Game of Mutual Love

[Dumangoon, 130F] Sexcape Room: Wipe Out Ch.9/9 [English] [Manhwa PDF] Completed

Empty Theory 3 - Cousin

(C90) [MEGALITH PRODUCTION (Shinogi Eisuke)] Shoku Miko - Girl meets Tentacle (Kuma Miko)

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

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

(C78) [valssu (Charu)] Souka Santan (Tales of Vesperia) [English] [Bouyatachi]