[Ootani Mikoto] Seishun Kanjouron - youth emotion theory [R18 Ban] 1
(COMIC1☆6) [Crazy9 (Ichitaka)] Zessica no Koufukuron | Zessica's Theory of Happiness (Aquarion Evol) [English] [biribiri + Doujin-Moe.us]
(C85) [Ajinomoto (Natsuhara Saike)] Tatakau Oshigoto! (Street Fighter)
[Asahina Makoto] Shinsouban Zettai Chikan Densha
[Kakashi Asahiro] Hakase no Renai Kaizouron | A Professors Theory on Love and Sex Reassignment Surgery (COMIC Situation Play Vol. 19) [English] [4dawgz + thetsuuyaku] [Digital]
天使の妹&悪魔の妹
[Shirogoma Rai] Mayonaka no Shainkyouiku
(C79) [Himeya (Abe Inori)] Ore no BiriBiri ga Konna Deredere na Wake ga Nai (Toaru Majutsu no Index) [English] [Tigoris Translates]
[Mira] Kodomo no Riron | A Kid’s Theory (School Girls Love Selection) [English] {Hennojin}
Benmusu Omnibus Vol. 1
Futaba841 (Mitsuya Yoguru) - The Love and Pleasure Theory for Boys [ENG]
Kimi to no Shukumeiron - The theory of fate with you. | 與妳的宿命論
(SC62) [Popochichi (Yahiro Pochi)] Youkoso RareKan-chan (Kantai Collection -KanColle-)
[Iwao] OL Rangiku (Bleach)
[Theory of HEAVEN (CROW)] Onikuya Ken-chan (Anyamaru Tantei Kiruminzoo) [Digital]
Jutai Reido
Waruyoi
[mdo-h] Soutaisei Virgin Theory [Digital]
(C86) [3745HOUSE, tekkaG (Mikami Takeru, Haru)] NULL NULL (Gintama) [English] {valc21, dast88} [Decensored]
Orcs and juvenile ω love evolution theory
Empty Theory 2 - Sky High
Azusa-san no Present For you! | 아즈사씨의 Present For you!
Scapegoat Koufukuron | Scapegoat Theory of Happiness
[Kleitos (Ryunosuke)] [Housoujiko] Hatate-chan Gachiona Namahousou.zip (Touhou Project) [Digital]
(SC54) [Clesta (Cle Masahiro)] CL-orz 21 (Kyoukai Senjou no Horizon) [Decensored]
[Zerotsuu] Jiru No Rasuto Esukepu
Onii-chan no Seishori wa Taihen desu