Heo

(SPARK10) [Kirisima (Theo)] Onedari Nandemo Hitotsu Dake! Tsuki ni Negai o (Touken Ranbu)

A Professors Theory on Love and Sex Reassignment Surgery

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

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

(SPARK6) [SPS Lab. (Sado Romeo)] Sexual Velvet No. 1 (Persona 3) [English] [CGrascal]

Soutaisei Virgin Theory

[CHIN-UP (Pocchi)] Osananajimi to [Chinese] [theoldestcat汉化] [Digital]

September 2018 Patreon Rewards

[Tsukuru] Suyasuya Hypnotherapy (Otokonoko HELL'S GATE #03) [Chinese] [theoldestcat汉化] [Digital]

(C97) [Seki Sabato (Tsukuru)] Kyou wa Kateikyoushi ni Iwarete Mesu Ochi Saimin Jishuu o Suru Hi [Chinese] [theoldestcat汉化]

(COMITIA124) [Seki Sabato (Tsukuru)] Shikkaku Boyfriend [Chinese] [theoldestcat汉化]

[U-hi] Additional Time Kohansen (Koushoku Shounen Vol. 12) [Chinese] [theoldestcat汉化] [Digital]

[Wang Kang Cheol, Minachan] 비밀수업 | SECRET CLASS Ch. 56 [English]

(C86) [bash-inc (BASH)] Nipplefar Sheol (SOULCALIBUR)

Theogonia

[acbins] Theo to Theo Kouhen | Theo and Theo: Final Chapter (Otokonoko HEAVEN Vol. 58) [English] [mysterymeat3] [Digital]

[Electric_Dragon] Leona ★ Heroes - League of Legends Fan Book (League of Legends) [English]

(ShotaFes) [SERVICE BOY (Hontoku)] Ookami Shounen to Haji no Hihou [Chinese] [theoldestcat汉化]

[FruitsJam (Mikagami Sou)] Ura Mahou Sensei Jamma! 17 (Mahou Sensei Negima!)

Theo to Theo Zenpen | Theo and Theo: First Chapter

(C76) [Aestheometry, Saboten Chaya (Various)] Toaru Flower Master no Baai (Touhou Project)

(Shota Scratch SP 2) [Reflection (U-hi)] Matière [Chinese] [theoldestcat漢化] [Decensored]

Empty Theory 1 - After Pleasure

Empty Theory 5 - Advantage

[Ayato Ayari] Yameru Toki mo Kore o Itoshi (Otokonoko HEAVEN Vol. 30) [Chinese] [theoldestcat汉化] [Digital]

[Kotoko] Love Letter o Morattara Osananajimi ni Osowareta Ken | 关于收到情书后被青梅竹马袭击这件事 (Koushoku Shounen Vol. 02) [Chinese] [theoldestcat汉化]

Watashi-tachi wa Koibito ni Natta

Happy theory

[Mario] Oidemase...♥ (Otokonoko HEAVEN Vol. 30) [Chinese] [theoldestcat汉化] [Digital]

Onedari Nandemo Hitotsu Dake! Tsuki ni Negai o

[SERVICE BOY (Hontoku)] Fukushuu Chinpo de Gan Hori Panikku!! [Chinese] [theoldestcat汉化]

(C90) [Kuromisa Kaijou (Ikezaki Misa)] Niedenka - Sacrifice Prince (Arslan Senki) [Chinese] [theoldestcat汉化]

Theo to Theo Chuuhen | Theo and Theo: Middle Chapter

[Ayato Ayari] Kotora to Ookami | 小老虎和狼 (Koushoku Shounen Vol. 07) [Chinese] [theoldestcat翻译] [Digital]

(COMITIA123) [SERVICE BOY (Hontoku)] Hajimete no Shuugakuryokou [Chinese] [theoldestcat汉化]

Empty Theory 6 - Hearts Scheme

(C93) [Kakukonoka (Menoko)] Bitch Servant no Shitsukekata (Fate/Grand Order) [Chinese] [theoldestcat汉化]

[Tsukuru] Neko o Kau (Otokonoko Heaven's Door 4) [Chinese] [theoldestcat汉化] [Digital]

(C95) [Kakukonoka (Menoko)] Onii-chan to Issho (Hypnosis Mic) [Chinese] [theoldestcat汉化]

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

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

[A-10] Load of Trash Kanzenban Ch. 1-11 [Chinese] [沒有漢化]

[FruitsJam (Mikagami Sou)] Ura Mahou Sensei Jamma! 17 (Mahou Sensei Negima!) [Chinese] [輝夜漢化] [Digital]

World's End Dancehall

Theobromin

(C93) [Seki Sabato (Tsukuru)] Tabi no Yoru no Himitsu [Chinese] [theoldestcat汉化]

HxxG ホン 2022 5 17

Kodomo no Riron | A Kid’s Theory

(C91) [Inariya (Inari)] Inariya-san-chi no Omakebon Shimakaze-kun no Heya Bangaihen (Kantai Collection -KanColle-) [Chinese] [theoldestcat汉化]

(C92) [Inariya (Inari)] Kyoudai ni Okeru Seikoushou no Kiroku [Chinese] [theoldestcat汉化]

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

[CHIN-UP (Pocchi)] Karasu Tengu No Kamikakushi [Chinese] [theoldestcat汉化] [Digital]

(C94) [Kuromisakaijou (Ikezaki Misa)] Hedo no Deru Gesu-domo no Kouyuuroku (Hunter x Hunter) [Chinese] [theoldestcat汉化]

[Wang Kang Cheol, Minachan] Secret Class Ch.121/? [English] [Manhwa PDF]

Elements1 - Theory

Theodore × Hamuko

[Tsukuru] Idol Mesu Mesu Daisakusen (Otokonoko Heaven's Door 3) [Chinese] [theoldestcat汉化] [Digital]

(COMITIA121) [Usamimi Syndrome (Erutasuku)] Oretachi no Seijo-sama ga Otokonoko na Wake nai daro! [Chinese] [theoldestcat汉化]

[Ayato Ayari] Ushimitudoki No Raihousha (Otokonoko HEAVEN Vol. 32) [Chinese] [theoldestcat汉化] [Digital]

(Douyara Deban no Youda! 4) [Sakana Kusai (Sakamei Hamachi)] Yoru wa Mijikashi Koiseyo Shounen (Boku no Hero Academia) [Chinese] [theoldestcat汉化]

[Sanagi Torajirou] Aheochi ❤ 3byou mae | Ecstasy at 3 Seconds [English] {doujin-moe.us}

[Takatsu] Isekai de Elf no Yuusha(♂) ga Yome ni Natte Kureru You desu !? (Koushoku Shounen Vol. 11) [Chinese] [theoldestcat汉化] [Digital]

[Ayato Ayari] Kimi wa Marude Onnanoko (Koushoku Shounen Vol. 08) [Chinese] [theoldestcat汉化] [Digital]

[MARIO ALMANAC (Mario)] METAL SLUG (Kantai Collection -KanColle-) [Chinese] [theoldestcat汉化] [Digital] [Incomplete]

Aheoho Making

(C94) [Kuromisakaijou (Ikezaki Misa)] Fate/DT♂rder Hiraki (Fate/Grand Order) [Chinese] [theoldestcat汉化]

[Ayato Ayari] Kimi o Metoruhi (Otokonoko HEAVEN Vol. 40) [Chinese] [theoldestcat汉化]

[Wang Kang Cheol, Minachan] 비밀수업 | SECRET CLASS Ch. 53 [English]

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

(C93) [S-Size (Shinachiku)] Boku no Tokutouseki [Chinese] [theoldestcat汉化]

(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]

[Furaipan Daimaou - ふらいぱん大魔王] Ecoco no Heon - えここの絵本 (Ecoco) [Lolicon]

[Innocent Grey]SHEOL KARANOSHOJO Art Work

[isao] SUKI SUKI (Ecchi MAX!!) [English] [N04h] [Digital]

[Ayato Ayari] Molester Tain Cafe <One More> [Chinese] [theoldestcat汉化]

[FruitsJam (Mikagami Sou)] Ura Mahou Sensei Jamma! 17 (Mahou Sensei Negima!) [English] (Trinity Translations Team)

(C93) [spika07 (Yoshino Sora)] Boku-tachi no Kyuuseishu-sama 02 [Chinese] [theoldestcat汉化]

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

(HaruCC23) [Seijun-ha (amam)] Tenshi no Tawamure (Devilman) [Chinese] [theoldestcat汉化]

[Mine Noujou (Minemura)] Hizuna LV0 no raama ou to himitsuno omajinai (Fate/Grand Order) [Chinese] [theoldestcat汉化] [Digital]

[Kawada Shougo] Wakatakenoko no Kimi (Otokonoko Heaven Vol. 04) [Chinese] [theoldestcat汉化] [Digital]

(C94) [Seki Sabato (Tsukuru)] Hanabi no Yoru no Himitsu [Chinese] [theoldestcat汉化]

(C95) [AMAGI AN IRONWORKS (Ebisu)] HOBBY'S BLOCK!! 28 Namaiki Mesugaki Kuro-chan o Gangime Aheochi Saseru Hon (Fate/Grand Order)

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

(Shota Scratch 31) [S-Size (Shinachiku)] Kimi ga Suki [Chinese] [theoldestcat汉化]

[James Hotate] Ore to Neko no Shiiku Seikatsu (Koushoku Shounen Vol.12) [Chinese] [theoldestcat汉化] [Digital]

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

[Morittokoke (Morikoke)] Eiketsu Ninja Gaiden ~Haiboku Hen~ (The Legend Of Zelda) [Chinese] [theoldestcat汉化] [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]

K's Theory

Tsundere Kōryaku No Saishū Teiri - Tsundere's Final Theorem

[Corundum] Otoshimae Tsukesasetatta (Fate/Grand Order) [Chinese] [theoldestcat汉化]

[Sakura Puchilo] ☆Kyouiku Terebi (Koushoku Shounen Vol.12) [Chinese] [theoldestcat汉化] [Digital]

(C92) [EGO DANCE (Nanamatsu Kenji)] Er-kun no Robo Ai o Ochinchin Ai ni Irekaete mita Ken (Knight's & Magic) [Chinese] [theoldestcat汉化]

[Shota Manga-ya-san (orukoa)] Josou Shounen to Moto Kakutouka Mushoku no Ero Manga丨女装少年与原格斗家(无职)的色情漫画 [Chinese] [theoldestcat汉化]

[Marinconia (Sumimaru Mary)] Zeitgeist197X | 时代精神197X [Chinese] [theoldestcat汉化] [Digital]

(Super ROOT4to5 2018) [trigger.m (Emu Emuo)] Omae no Master wa Maid Janai!! (Fate/Zero) [Chinese] [theoldestcat汉化]

(C94) [spika07 (Yoshino Sora)] DRAMATIC [Chinese] [theoldestcat汉化]

[Aichi Shiho] Hajimemashite Natsu (Otokonoko HEAVEN Vol. 35) [Chinese] [theoldestcat汉化] [Digital]

(ShotaFes 2) [SERVICE BOY (Hontoku)] Onii-chan ni Tanezuke Shichao! [Chinese] [theoldestcat汉化]

(C94) [Minamono (Minamo)] Ko-Gil Challenge (Fate/Grand Order) [Chinese] [theoldestcat汉化]

[Usamimi Syndrome (Erutasuku)] Dakara Boku wa Shinyuu no Musuko o Okasu | 那我就淦好朋友的儿子咯 [Chinese] [theoldestcat汉化] [Digital]

Lucy

(C95) [Inran Shounen (Jairou)] Yami no Serva Fes - Kindan no Rakuen ni Youkoso! (Fate/Grand Order) [Chinese] [theoldestcat汉化]

(Shotaket 14) [Reflection (U-hi)] Enchant [Chinese] [theoldestcat汉化] [Incomplete]

[Corundum] Otoshimae Tsukesasetatta (Fate/Grand Order) [Chinese] [theoldestcat汉化]

[Kotoko] Osananajimi no Hiyakeato ga Okashii nodaga! (Koushoku Shounen Vol. 05) [Chinese] [theoldestcat汉化]

(C93) [Kakukonoka (Menoko)] Rakugakishi (Various) (Chinese) [theoldestcat汉化]

(C90) [Kuromisa Kaijou (Ikezaki Misa)] Niedenka - Sacrifice Prince (Arslan Senki) [Chinese] [theoldestcat汉化]

A Kid’s Theory

[Morittokoke (Morikoke)] Jack-kun wa Okaa-san to Issho (Fate/Grand Order) [Chinese] [theoldestcat汉化] [Digital]