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

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

(SC61) [SEM;COLON, moco chouchou (Mitsu King, Hisama Kumako)] idoLiVE -Fuzzy Navel-

K's Theory

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

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

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

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

Innocence1 - Theory

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

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

(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]

A Kid’s Theory

[Fujisaka Lyric] Fuzzy ♥ Honey (COMIC Megamilk Vol.12 2011-05) [English] {Mistvern & Dragonice} [Decensored] {Teddy Bear}

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

Furueru Kuchibiru fuzzy lips1 Complete Ban

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

A Professors Theory on Love and Sex Reassignment Surgery

Orcs and juvenile ω love evolution theory

[INU] [Full Color Seijin Han] Furueru Kuchibiru fuzzy lips0 Complete Ban [Digital]

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

Fuzzy PC88 DoujinCG set

Furueru Kuchibiru fuzzy lips0 Complete Ban

Kodomo no Riron | A Kid’s Theory

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

[Fuzzy Guard (Shiido)] Suki desu Jougasaki-san (THE IDOLM@STER CINDERELLA GIRLS) [Digital]

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

[INU] [Full Color Seijin Han] Furueru Kuchibiru fuzzy lips1 Complete Ban [Digital]

(SC61) [SEM;COLON, moco chouchou (Mitsu King, Hisama Kumako)] idoLiVE -Fuzzy Navel-

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

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

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

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