Stadard Hallidays Theory

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

Idol Shimai Mika Rika

Mummy Maid

Ingoku Danchi | 淫獄小區 ch.3

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

(SC2015 Summer) [Hacchakesou (PONPON)] Tokumei no Megami-tachi (Dungeon ni Deai o Motomeru no wa Machigatteiru no Darou ka) [English] [CGrascal]

[Chiyoko] DoAda Manga (Persona 4)

[Mizone] Kindan no Shohousen | The Forbidden Prescription [English] [The ButterFly Khan] [Decensored] [Digital]

[Mikaduki Neko] UdoSakuMyon Mujintou Hyouryuuki (Touhou Project)

[Yadokugaeru (Locon)] Seisenryou 207 gou 2 [Digital]

Kobito Musume-chan Manga 1

Unlucky Lewdness

Big Breasts Flat Theory

[poza] Shishunki o Mukaeta Otokonoko to Onnanoko no Tame no Ehon Aka-chan no Tsukurikata -Tottemo Kimochii Nakadashi Sex-

[Tonzura Douchuu (Kazawa)] Saimin Youmu | Hypnotised Youmu (Touhou Project) [English] [Digital]

Senjou ga Ikigai da to Kanchigai Shiteru Mesu Onaho o Saiminjutsu de Kanzen Kuppuku Sasete Ikihaji Acme de Mesu Ochi Saseru Hon

Empty Theory 4 - Well Definitely Meet Again

(C89) [Grace (Yokoyama Naoki)] Project "Settai Ryokou" Krone de Rin-chan nau! (THE IDOLM@STER CINDERELLA GIRLS)

Soutaisei Virgin Theory

[Cesar] Maid-sama to Danna-san (COMIC Potpourri Club 2011-04)

Elements1 - Theory

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

(COMIC1☆7) [Kurumaya (RoGa)] Senkuu Haran (Senran Kagura) [English] [Chocolate]

[Yuzuki N Dash] Ore wa, Yaotome Ichika ga Nigate da. (COMIC Koh 2018-11) [Chinese] [兔司姬漢化組] [Digital]

[CELTRANCE (Kogaku Kazuya)] Mama Hame Sex (Tsuya) no San (Mae)

Ecchi Sketch Onna Kakutouka Hen

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

MusSoap [On Going]

Elin Peropero Soushuuhen

(CSP4) [Takitate (Kantarou)] Goddess Petals II (Oh! My Goddess / Ah! Megami-sama)

逃亡ELF5

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

[Etuzan Jakusui] Onozomi no Ketsumatsu | A Wish's Conclusion (COMIC Anthurium 2019-05) [English] [Hive-san] [Digital]

[TETRARA (Tokiwa Yutaka)] Tekisei 0 no Futanari Joou-sama -Oni Shigoki! Jigoku no Gyaku Anal Kenshuu- [Digital]

Soutaisei Virgin Theory

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

(COMIC1☆11) [Nijutteya (Youta)] Nijutteya-01 Konosuba Minna de Love Hame Hon (Kono Subarashii Sekai ni Syukufuku o!)

[Inukami Inoji] Mitsugetsu to Moon Light - Honeymoon and moon light (COMIC Anthurium 2022-02) [English] =NSS= [Digital]

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

W.C.

Fuzzy Theory

[Momoiro Manjiru] Manjiru Torotoro

Empty Theory 3 - Cousin

Gennai Ao no Abunai Beit Nikki

[Dr.VERMILION (Petenshi)] Kotonoha shimai Ero trap dungeon | Kotonoha Sisters in an ETD (VOICEROID) [English] [2d-market.com] [Decensored] [Digital]

Buppin kairō

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

Akashi Buchi Okasu Yatsu

Happy theory

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

A Professors Theory on Love and Sex Reassignment Surgery

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

[Nariagarimono (Beng Man)] CLICK! A.D 2000 (Turn A Gundam)

Innocence1 - Theory

[Kudou Hisashi] Koi no Yukue - Fabulous Triangle

(C85) [Atelier Maruwa (Maruwa Tarou)] Okusama wa iDOL -Iori to Shoya Hen- (THE IDOLM@STER)

Riku Manga Tsumeawase

Gurabyuru~tsu! ! Chinchin ketsu Anabe ♂ V2

[atelier MUSTACHE (Sugajima Satoru)] "Tetsudou-in no Roman" Daisankai Ekichou to Tetsudou-in no Yoru | 「铁道员的浪漫」 第三回 站长与铁道员之夜 [Chinese] [马栏山汉化组]

(C86) [Nikuiro Ribon (Kushi)] Soccer Danshi to Volley Danshi o Hamehame Shichaimashita (Inazuma Eleven GO, Haikyuu!!)

(C92) [Pink Kitten (Naokichi.)] Calling (Black Butler)

(C74) [Kouchaya (Ootsuka Kotora)] HIDE&SEEK 2 (Code Geass)

Fanbox

(C94) [Bouzen Meiden R (Anago)] Naganami Milk Kai Ni (Kantai Collection -KanColle-)

[ICE BRAND (Aotsuki Shinobu)] etosetonya (ToHeart2)

A Kid’s Theory

[sunabanishugo！] bani・in・za・torappu (deizunitsuisuteddowandarando)

[Family VOID (Hanekumo)] Yasashii Rumia (Touhou Project) [Digital]

[mdo-h] Soutaisei Virgin Theory [Digital]

(Panzer Vor! 20) [Xikyougumi (Sukeya Kurov)] THE DOG MAY STAND THE STRONG INSTEAD (Girls und Panzer) [English]

Scapegoat Koufukuron | Scapegoat Theory of Happiness

[Morittokoke (Morikoke)] Eiketsu Ninja Gaiden ~Haiboku Hen~ (The Legend Of Zelda) [English] [EHCOVE] [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]

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

Empty Theory 7 - Destroyed Family

(C90) [Guminchu (Yorutori)] B&W (Fate/Grand Order)

Orcs and juvenile ω love evolution theory

Uwasa no Game Suki Onee-san Ie ni Asobi ni Ittara Shoutai wa Succubus de Manmato Dorei ni Sarechatta Ohanashi

Empty Theory 2 - Sky High

Empty Theory 6 - Hearts Scheme

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

(C94) [Unagigoya (Sakura Puchilo)] Boku no Osanpo

Shiori Dai-Nijuuyon-Shou Ituwari no Hate - Shiori Volume 24 The End of False Relationship

(COMITIA111) [Manguri Cannon (Didori)] Senpai Dakkan | Senpai-Stealing Rape [English] [doujin-moe.us]

(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]

Aishiteruze Ore no Yuusha-sama

(C96) [Asakaze no Shizuku (Asakaze Abyss)] FutaKuro!! (Fate/kaleid liner Prisma Illya) [Chinese] [新桥月白日语社汉化]

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

(C97) [Nekorobi (Nakajima Kotoko)] Gaman Dekiru mon!! (Fate/Grand Order) [English] [mysterymeat3]

Maguwai Midareru Futari no Yukiko

[Studio Rakkyou (Takase Yuu)] Kanzen Nenshou 3 (Super Doll Licca-chan) [English] [ATF]

(C93) [Komaruya (Komaru)] Dragon Route R

Empty Theory 5 - Advantage

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

(C79) [Yukanhighzakura (Chieko)] Hideyoshi no Hokentaiiku (Baka to Test to Shoukanjuu)

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

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

[Hazuki Kaoru] Hotel de Dakishimete Mankai Otome Hen

[Masuda] Musume-san o Kudasai!! [English] [Digital]

(C86) [Koikuchi Kinako (kiki)] Koshodou Fragrance (THE IDOLM@STER CINDERELLA GIRLS)

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

Empty Theory 8 - Apparent Flash

Nishizumi to Shimada 2

(C94) [Chocolate Synapse (Shika Yuno)] Boku no Kanojo o Shoukai Shimasu 3 (Hinabita) [English]

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

[SOUND MILK (Otochichi)] Maso-katsu -Appli de Joou-sama o Sagashite Choukyou Sareru Maso Otoko-tachi- [English] [Incomplete]

(C86) [Blue Bean (Kaname Aomame)] C2lemon@EX (Code Geass) [English] {doujin-moe.us}

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

YUKAKIRI 2nd

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

Empty Theory 1 - After Pleasure

[RED RIBBON REVENGER (Makoushi, Taireru)] Yume mo Kibou mo Heso ni Aru! (Yumekui Merry) [English] [RIENA]

[Higenamuchi] Hitokano [chinese]

404 Not Found U'-GIRLs

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

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

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

[Giuniu] Kigurumix (COMIC Anthurium 007 2013-11) [English] [Facedesk]

[Hirama Hirokazu] Mochizuki-san-chi wa Motto Motto Yokkyuu Fuman[Chinese][两面包夹汉化组]

[Yuna] Binbin ni Naru Tsubo Oshichatta!? ~Toshishita Otokonoko no "Are" de Gyaku Massage~ Ch. 1-3

Sanae-san to Ichinichi Gohoushi

Kodomo no Riron | A Kid’s Theory

(C81) [Aiirojikan (Kaga Akuru)] Boku wa Maria to xxx! (Boku wa Tomodachi ga Sukunai)

K's Theory

[SSAEM]我的M属性学姐 EP.1(正體中文)高畫質版本

[Kapa] Kaisuiyoku (THE IDOLM@STER CINDERELLA GIRLS)

Shigyaku Gensoukyou -Fujiwara no Mokou-

FNC Funco Nakadashi Community {Mant}

(C91) [Apple Effect (MurasakiO)] Warspite to Teryouri (Kantai Collection -KanColle-) [Chinese] [无毒汉化组]

Chocolat-chan no Kirakira Roshutsu Juukan

Shanai mensetsu

(C71) [Nicomark (Minazuki Juuzou)] Konya wa Sotto Code GeAnus (CODE GEASS: Lelouch of the Rebellion) [English]

Shima Shima

[ATTIC WORK SPACE (Ryoji)] Inakax 2! Osoto de Aokan & Kyoushitsu Ecchi Hen [English] =White Symphony= [Digital]

Yotsuba, Pants o Kai ni Iku | Yotsuba, Go Buy Some Pants

[Kikuichi Monji] Analist

Koharu to Sukebe suru Hon | Koharu and the Lewd Book!

Tsumazuki

(C85) [Shittoden (Shitto Mask)] Majo Yuugi (Touhou Project)

[Tsukimoto Kizuki] Sex no Yoshuu Shimasen ka? ~Seikou no Jitsugi Shiken ga Dounyuu Sareta Shakai~ Ch. 1 (COMIC Ananga Ranga Vol. 49) [Chinese] [無邪気漢化組]

(SC2015 Winter) [moriQ (Mori Airi)] Yuuki Yuuna to Sex Suru (Yuuki Yuuna wa Yuusha de Aru) [English] [ZERO-VOID]

(C73) [Peco Poco (Naruse Michi)] Erohon (Kodomo no Jikan)

(COMITIA105) [Ash wing (Makuro)] DEVIL KISS +

(C87) [Gessyu (Chouzetsu Bishoujo mine)] AdultsOnly 3 Zen (Touhou Project) [English] [Doujins.com]

(C48) [Studio Amunats (Tanuma Yuuichirou)] Otogi Douji COMPLETE

(C81) [MünchenGraph (Kita Kaduki, Mach II)] Cocking!! (WORKING!)

(C72) [Doku-Pepper (Shiina Kazuki)] Hangyaku no Daishou (Odin Sphere)

頭のお背中お流しします

[Yamakawa junichi] I'm the sexiest one of all [Eng]

レティエスの導きVOL.1