Activation Synthesis Theory

Empty Theory 3 - Cousin

Houshi-bu no Seiteki na Katsudou no Seika. | The Sexual Activities Of The Volunteer Club

Ikinari Kozukuri Katsudou 2 | Sudden Babymaking Activities 2

(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]

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

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

Empty Theory 4 - Well Definitely Meet Again

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

Forbidden club activities

Club Activities (English)

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

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

Active idle mine

(C97) [Kaiten Sommelier (13.)] 39 Kaiten Shouko-san no Onaho Nikki. Tadaima, Onaho Katsudouchuu. | Shouko-san's Onahole Diary. Today's Onahole Activities. [English] [Double Ecchi]

Satoko to Bukatsu no Nichijou | Satoko’s Daily Club Activities

[Maximize Darkness] Girlscout secret activity [English] [Kuroitofu]

[Ninomiya Ryouzou] Bukatsu no Koakuma - Sweet Devil of Extracurricular activities

[Pussymark] Hyper Activation Twins

(C77) [Actively Dawn (Fukai Miyabi)] Milk Tea Party (Umineko no Naku koro ni) [English] [SlowManga]

Active Heart

Girlscout secret activity

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

Sumireko CAc -Club Activities-

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

Angel Halo Original illustration Artbook

Club Activities boy x Cram School tutor

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

Happy theory

[Mutsuki Nozomi] Active Heart (Passive Heart) [English] [N04h]

(C90) [IIIIItune (Sippufx)] Enadri Activity! (Touhou Project)

[Teruki Kuma] Active Heart

Common Sense Modification Activity Record

Grand Hotel Active

[Home Not Found (snhr, Fudisen)] Idainaru Makoto-sama no Katsudou Kiroku | The Great MAKOTO-sama's Activity Record (Blue Archive) [English] [Cyanner] [Digital]

Bible Black Gaiden kanzenhan

(C88) [ORANGE☆CHANNEL (Aru Ra Une)] Niko no Otona na Kouhou Katsudou!? | Nico’s Adult Activities (Love Live!) [English] [L-Lewd... Translations]

(C64) [Active Sunrise (Muranako)] Oshiroibana 2

Love-Making Academy Sex Activities

Kivotos Child-making Activity Report

[Nagi Ichi] Hatsumei Shounen Touma! ~Tetsuda Hakase no Gyakushuu Hen~ | Boy Genius Touma-kun! vs. The Evil Dr. Tetsuda's Torture Machine! (Kappatsu Shounen Kanshasai - Active Boy's Thanksgiving Festival) [English] [Digital]

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

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

Bukkake Houshi Katsudou | Bukkake service activities

5 stories Ch3 - Club Activities

(CR25) [Hoka Hoka Shoten (various)] ACTIVE HEART (various)

(C78) [Active Sunrise (Muranako)] PARTY SHIFT XII

DISCIPLINE Sai shusho Complete ban

(C94) [Junpuumanpandou (Hida Tatsuo)] SECRET ACTIVITY (THE IDOLM@STER CINDERELLA GIRLS)

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

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

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

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

[Takase Yuu] Otokonoko Katsudou Houkokusho - Otokonoko Activity Report

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

Intai Kidou Souko | Lewd-Body Activation Warehouse

Active Passive

(C67) [A_N_C (Active Network Communication) (Midori Wakamoto)] A.N.C debut ☆ (School Rumble/Mai-HiME)

[Tamagoro] Mutsumi-san no Hanshoku Katsudou Kiroku | The Chronicle of Mutsumi's Breeding Activities Ch. 1-4 [English]

Literary Activity

Bakunyuu Elf to Isekai Seikatsu - Big Breasts ELF in Different World Sexual Activity

Active Heroines

[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]

Alice Synthesis Thirty Uncen

Active Canine + Bikini de Ojama | Active Canine + Bikinied Nuisance

Kappatsu Shounen Kanshasai - Active Boy's Thanksgiving Festival

Shukushou Seikatsu ~Osananajimi to no Sugoshikata~ | Shrinking Activity ~How To Spend Time With Childhood Friend~

Empty Theory 5 - Advantage

[Tamagoro] Mutsumi-san no Hanshoku Katsudou Kiroku | The Chronicle of Mutsumi's Breeding Activities Ch. 1-3 [English]

Himitsu no sei katsu - Secret Sexual Activity

Bukatsu Kara Kaettekita Imouto ni Paizuri Shite Morau Hanashi | A Story About My Little Sister Giving Me Titjobs After Her Club Activities

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

Scapegoat Koufukuron | Scapegoat Theory of Happiness

(CSP5) [Actively Dawn (Fukai Miyabi)] Umineko ga naku mae ni ore ga naita (Umineko no naku koro ni)

(C87) [Kaze no Gotoku! (Fubuki Poni, Fujutsushi)] Geneki Idol Tomoe Mami ga MM Gou de Iku! | Active Idol Tomoe Mami in a Magic Mirror Truck! (Puella Magi Madoka Magica) [English] [doujin-moe.us]

[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]

[Tsukimoto Kizuki] Yarisa no Jittai Bangaihen | The Alcohol Induced Activities of a Certain Famous University's Club Revealed (COMIC Ananga Ranga Vol. 6) [English] =LWB= [Digital]

[Mukaibi Aoi] Fashion-bu no Himitsu no Katsudou | The Fashion Club’s Secret Activity (Cure Bitch HC Heartcatch) [English] [knightsever]

[Takase Yuu] Himitsu no Club Katsudou | Secret Club Activities (Koushoku Shounen no Susume 9) [English] {Hataraki Bachi Translations} [Decensored]

Rin Shibuya Activities

Two Masturbating boys Active

Club Activities After the School

Kodomo no Riron | A Kid’s Theory

[Mutsuki Nozomi] Active Heart

[Shiwasu No Okina] Aibuka! (Kari) Idol Bukatsudou | Club Activities as an Idol! Ch.01-6[English] [The Lusty Lady Project]

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

Rice Shop Tachibana Koushiro's Invitational Activity {Leon990 Scanlations}

[Leonat] Sensei to Houkago Bukatsu Kiroku | Record of My After-School Club Activities with Sensei (Blue Archive) [English] [Douzo Lad Translations]

(C70) [Active Sunrise (Muranako)] PARTY SHIFT Soushuuhen 1 ~Deai~

(C68) [Hi-PER PINCH (clover)] Active Cooking (Mabinogi)

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

Sensei And The Secret Club Activity

Happy Family Activity [English] [Rewrite] [CrimsonCorset]

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

A Kid’s Theory

[Takase Yuu] Otokonoko Katsudou Houkokusho - Otokonoko Activity Report

Innocence1 - Theory

(C47) [MICA (Various)] ACTIVE PEACH FINAL

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

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

Enadri Activity!

[Active] Mahjong Fantasic Art Collection

(C56) [Active Sleep (Shukushun)] Okosama Shijou Shugi 1 (Dokkiri Doctor)

[FJ-III] Active Heroines (Samurai Spirits)

Secret Club Activities (Yaoi)

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

Toilet Activity - Hentai hanako in the toilet

Empty Theory 1 - After Pleasure

ACTIVE PEACH FINAL

Empty Theory 7 - Destroyed Family

[D'Erlanger (Yamazaki Shou)] Active

[Mentaiko Jojotaro (Machupinyu)] Aqua-sama’s P-activation story (Kono Subarashii Sekai ni Syukufuku o!) [Digital]

[Mandara Ryuuseigun (Signo Mandara)] Nicchoku wa Micro Bikini de ~Sukebe na Kakko de Seishori Katsudou~ | The Class Duty Is Done in Micro-Bikinis ~ Sexual Relief Activity in Depraved Outfits [English] [Solas]

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

[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] [Colorized] [Satansoft]