Activation Synthesis Theory

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

[Tamagoro] Mutsumi-san no Hanshoku Katsudou Kiroku Dai 1-wa: 4-gatsu 11-nichi | The Chronicle of Mutsumi's Breeding School Club Activities (COMIC Penguin Club Sanzokuban 2016-05) [English] [Momo Demon]

[Mocchimochiya (caruta)] Bukatsu-go wa Seishori Gakari -Kanojo no Hajimete wa Boku no Mono- | After Club Activity Sexual Need's Handler Her First Time is Mine [English]

(Futaket 8) [NOTE-ISM] Girls Cross Synthesis

Active Heart

[Morittokoke (Morikoke)] Hyrule Hanei no Tame no Katsudou! | Activities for the Sake of Hyrule’s Future! (The Legend of Zelda) [English] {darknight} [Digital]

(CT26) [ActiveMover (Arikawa Satoru)] Rin Shibuya Activities Prologue (THE iDOLM@STER CINDERELLA GIRLS)

[Higedokoro (Alapi)] Schale Houshibu Katsudou Kiroku | This Week's Record of Activities for the Schale Relief Club (Blue Archive) [English] [head empty] [Digital]

[Primal Gym (Kawase Seiki)] ACTIVE LOVERS type R (Comic Party) [2002-09-30]

[Minatoya Shunsaku] Gakkyuu Iinchou no Houkago | The Class Representative's After School Activities [English] [WiD]

Komeya Tachibana Koushirou no Kanyuu Katsudou | Rice Shop Tachibana Koushirou's Invitational Activity

ACTIVE LOVERS

(COMIC1☆11) [Showa Saishuu Sensen (Hanauna)] Kamiyama Koukou Omanko Kenkyuukai Katsudou Kiroku | Kamiyama Highschools Vagina Research Society Activity Record (Hyouka) [English] [Doujins.com]

Club Activities (English)

Grand Hotel Active

(C85) [Hougakuya (Tohzai, Namboku)] Aishiai Gakuen Seikatsu | Love-Making Academy Sex Activities (Danganronpa) [English] {doujin-moe.us}

[Mira] Catch Love (Ao Yuri -Story Of Club Activities-) [English] [Yuri-ism]

Her Romantic Activities

Rin Shibuya Activities

Empty Theory 1 - After Pleasure

Rin Shibuya Activities Prologue

Literary Activity

Happy Family Activity (Stripped and Edited) [English] [Rewrite]

Project Nemesis activated

[Haison] Ouma no Oyome-san Ninkatsuchuu - Horse's Bride Pregnancy Activities (COMIC Mugen Tensei 2024-08) [Digital]

(C76) [Active Sunrise (Muranako)] PARTY SHIFT X

[Mattari House (Aitsu)] Shazai Inkou (Active Raid -Kidou Kyoushuushitsu Daihachigakari-) [Digital]

Otomari Dokidoki Activity

Empty Theory 4 - Well Definitely Meet Again

(C71) [Active Sunrise (Muranako)] Oshiroibana -REFRAIN- Natsu

Report on the activities of the Special Comfort Section, Part 1

Hyrule Hanei no Tame no Katsudou! | Activities for the Sake of Hyrule’s Future!

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

Bible Black kanzenhan

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

[Yoshida] Sensei to Himitsu no Bu Katsudou | Sensei And The Secret Club Activity (COMIC Grape Vol. 4) [English] {amaimono} [Digital]

Common Sense Modification Activity Record

(C67) [Active Sunrise (Muranako)] Oshiroibana -REFRAIN- Haru

(C87) [Water Garden (Hekyu)] Active Positive (Strike Witches)

Active Passive

[Kururi Active] [Full Color Seijin Han] DISCIPLINE Dainishou Complete Ban [Digital]

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

Iyami Tarashii Bukatsu no Senpai Onee-san | Sarcastic club activities senior sister

Saimin Katsudou! Stars Hen | Hypnosis Activities! Stars Edition

[Sakurai Minami, Umemaru] Himitsu no Shakespeare | Secret Shakespeare (Ao Yuri ~Story Of Club Activities~) [English] [yuriproject]

[Mamezou] Manga Club Activity Log (Anal wa Sex ni Hairimasu ka?) [English]

(C56) [Active Sleep (Shukushun)] Oko-sama Shijou Shugi 1 | Child Supremacy 1 (Dokkiri Doctor) [English] [Afro]

Secret Club Activities (Yaoi)

Enadri Activity!

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

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

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

[Mattari House (Aitsu)] Hoshimiya Haruka no Junan (Active Raid -Kidou Kyoushuushitsu Daihachigakari-) [Digital]

[Mocchimochiya (caruta)] Bukatsu-go wa Seishori gakari ‐Kanojo no Hajimete wa Boku no Mono‐ | After Club Activities: Sexual Relief Duties -Her first time is mine- [English] [Kinsei Translations]

[Mutsuki Nozomi] Active Heart

(C64) [Ironman (Various)] HYPER-ACTIVE-GALS IN BLUE SUMMERS!! (Dead or Alive)

(C78) [ACTIVELY DAWN (Fukai Miyabi)] MoBxMIO (K-ON!)

Mutsumi-san no Hanshoku Katsudou Kiroku | The Chronicle of Mutsumi's Breeding Activities Ch. 1-5

[Kakuninii] Common Sense Modification Activity Record [English]

(C46) [MICA] Active Peach 4 (Mahou Shoujo Pretty Sammy, Tenchi Muyou!)

Kagai Jugyou | Extracurricular Activity

[Grove Grow (Komori Kuduyu)] Cosplay-bu Ura Katsudou Nisshi - Cosplay CLUB Secret Activity diary [Chinese] [Digital]

Sensei to Houkago Bukatsu Kiroku | Record of My After-School Club Activities with Sensei

(C65) [Kensoh Ogawa (Fukudahda)] Groovy Active Daughters (Gad Guard)

5 stories Ch3 - Club Activities

[Banana Saruen (Shimamoto Harumi)] Witch Activity (Witch Craft Works) [Digital]

[Marui Maru] Yui Sensei no Kyoushi Seikatsu | Ms. Yui's Sexual School Activities (MuchiMuchi ♥ Cream Pie) [English] [Hachimaki+Alex68785] [Digital]

Innocence1 - Theory

[mdo-h] Soutaisei Virgin Theory [Digital]

[Takase Yuu] Otokonoko Katsudou Houkokusho - Otokonoko Activity Report