Obser

(C64) [kodomo challenge (Various)] natsu no kansatsu nikki | Summer observation diary (Original) [English]

An ENGINE

Burlesque Night | 艳舞荒诞夜

No Surprises

(C93) [Akikaze Asparagus (Aki)] Uzuriho (Touhou Project)

(Mimiket 9) [Pastel White (Okahara Meg.)] Gyakuten Riyuu (Ace Attorney)

Marnie wa Yuuri kara Amai Ringo o Futatsu Moraimashita.

"Korai kara no Narawashi" Niizuma e no Ecchi na Itazura

[Kisaragi Gunma] Kouyaku Genshu | Public Commitment Strict Observance (COMIC Megastore H 2004-05) [English] [SaHa]

Suisei Observation

Observer ni Kansatsu Sareru Deutschland-kyuu Shimai

Kyou no Jugyou wa, Chikyuujin no Hanshoku Katsudou no Kansatsu desu | Today's Lesson is Observation of the Breeding Activities of Earthlings

(C90) [Nyankoromochimochi (Kotoba Ai)] Takao-san wa Choroin desu (Kantai Collection -KanColle-) [Chinese] [空気系☆漢化]

[Nohri Isawa] Naisho no Kansatsu Nikki (Secret Observation Journal) [English] [Mistvern]

[LoveRevo (Waguchi Shouka)] Love Love Lockhart LA (Final Fantasy VII Advent Children) [English] [Hentai-Enishi]

Maid Flandre Kansatsu Nikki - Maid Flandre observation diary

Hanazakari Promise

Bernadetta ga Kawaii kara Choukai Menshoku ni Natte mo Ii ka!

(C83) [Watosato (Sugiura Sen)] Yae-chan Kenbunroku!! | Yae-chan Observation Record!! (Ganbare Goemon) [English] =TV + Chocolate=

Low-Rise in the Darkness

[ppatta] Yasei Ningen Kansatsu Nisshi | Wild Human Observation Record [English] [Digital]

Nakimushi Ecchi | Crybaby Sex

Joshi ga Tsuyosugiru Tennis-bu

Niku Benki No Atorie～ Zen Ana 〇 Ko No Renkin Jutsushi～

[koko souiu mise janainde] Idol Sakura -Iki Jigoku-

(C91) [Makino Jimusho (Taki Minashika)] SISTERS ~Kakusareta Kioku~ 2012-2015 (SISTERS -Natsu no Saigo no Hi-)

Onna Kyoushi to Jugyouchuu ni Sex Dekiru Danshikou ~Uiuishii Kyouiku Jisshuusei ni Rankou no Senrei~

Honor Student in the Quicksand Observation Booth =LWB=

[Aiirosakura (Aikawa Ryou)] Kuubo Wo-Kyuu-chan no Amatsukaze Yuri Dorei Choukyou ~Mekakushi Shimakaze Choukyou Hen~ (Kantai Collection -KanColle-) [Digital]

Oppai wa Dai-2 Skill no Aji ga Suru

Doki! Special 2008-03

Peaceful Snail Alien Observation Logs

[Ion] Nozonde ita Nichijou 1-2 | Desired Everyday 1-2 [English] [Coffedrug]

(C71) [Power Slide (Uttorikun)] Monzetsu Iyashi Jigoku Go (ARIA)

Boku no Daisuki na Okaa-san o Tannin no Sensei ni Toraremashita.

Rien no Onna

(SC31) [Aneko Chokudoukan (Koume Keito, Marcy Dog, Hormone Koijirou)] Danmenou (Various)

Green Acorn

[Kurubusi-kai] Suisei Observation (Rozen Maiden) [ENG]

Byakko Shobou e Youkoso! Part 11

Himawari Kansatsu Nikki | Sunflower observation diary

(C71) [Parupunte (Fukada Takushi)] Rakugaki Jikken Hon 3 (Code Geass)

(Comitia100) [Metiorite Observation Center(Mi no Ji)] Mimesis

Shiren

Sonia's pokemon observation gone wrong

Yukari-san to Kiritan ni Nukaretai

[antyuumosaku (malcorond)] Shimaidon Itadakimasu [Digital]

Bad End Yayoi-chan!

Miseruko-chan

[Tempuru] Albedo & Sucrose's Isekai Observation Research Report

Observation Picture Diary of Training a Pig

[えと]FANBOX [R-18G]（2021，4）p6

[Nectar] Kimi ga Haramu made Nando mo Aishiteru [Chinese]

Yellow Pop Chapter 2

片端の桜

地上ノ兎と狐の嫁入り

(C86) [LemonMaiden (Aoi Masami)] Datenshi XX EPISODE 1 | Fallen Angel XX EPISODE 1 (Fate/kaleid liner Prisma Illya) [English] {doujin-moe.us}

JOJOMAKU

(SC56) [Waffle Doumeiken (Tanaka Decilitre)] Buta-san Choukyou Kansatsu Enikki | Observation Picture Diary of Training a Pig (Accel World) [English] [biribiri]

[Monshiro] Oji-san to Oji-san ga Watashi o Yobu

(C90) [Necktie Shop (Mizumi)] Koume Shirasaka ni Natsukareta Ninomiya Asuka Ninomiya | Asuka Longs For Shirasaka Koume (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [加帕里汉化组]

[Vadass (Oltlo)] Dekiai Kansatsu Nikki | Mother's Love Observation Journal [English] [Tigoris Translates] [Digital] [Bar Censor]

Ai Aru Kagiri ** Shimashou

(Ware, Yasen ni Totsunyuu su!) [OTAUT-R (Sumeragi Hamao)] Ibitsu na Iremono (Kantai Collection -KanColle-) [Chinese] [CE竹隐庭]

Ero Sister 7 - Cumshot Harmony

(C69) [Mirabilien Fabrik (Yuzu Momo)] Mahou Toshokan no Yoru (Touhou Project) [English]

[Kikaider Reijhiro] Toaru Minarai Mahou Shounen no Nichijou - AL's Daily Life The Apprentice Magic Boy [English] [mysterymeat3]

Shiragiku Hotaru no kore o Mitemo... Kirai ni naranai de Kudasai

Maria-sama ga Miteru Baishun 8 | Prostituyendonos mientras María nos Observa 8

[Kuritsu Yoshihiro] Marutto Kansatsu♡ Inkou Kyoushitsu - Let's Observe a Public Fuck in a Classroom

[Uniyaa (Ikinari Mojio)] Kyou no Jugyou wa, Chikyuujin no Hanshoku Katsudou no Kansatsu desu. - Today's lesson is observation of the breeding activities of earthlings. [Digital]

ABDUCT ～Ike Nai Shiiku Kansatsu～ | ABDUCT ~The Wrong Breeding Observation~

Dekiai Kansatsu Nikki | A Doting Mother’s Observation Diary

Jinbobo ～Abunai Shiiku Kansatsu ～ | Jinbobo ~The Dangerous Breeding Observation~

Schoolgirl Infiltration Reportage

Torotoro Vacation

Adam no Rokkotsu v01

(COMITIA92) [Marked-two (Maa-kun, Shichijou)] Fumi-chan no Kansatsu Nikki (Jou) | Fumi-chan's Observation Diary (Top) [English] [desudesu]

[Zìpu Qiduan (Luchi)] Tatta Futari no Senso (Fate/Grand Order) [English] [Hennojin]

Kanojo ga Futago Dattanode Nakayoku 3P Shita Ken

(COMIC1☆7) [Gate of XIII (Kloah)] Nyuujoku Holstein -Oikawa Shizuku no 105cm Oppai wa Boku no Mono- | Tit-tortured Holstein: Shizuku Oikawa's 105cm Boobs are all mine! (THE IDOLM@STER CINDERELLA GIRLS) [English] [Chocolate]

[Uo Denim] Nuku Nuku Gyarux | Cozy Cozy Gyaru Sex (Bitch Stream) [English] {Afro}

Suguha-chan Kansatsu Nikki | Diario de Observación de Suguha-chan

[Yama Bicco] Futari no Seikan Telepathy

Pool no Aji

Aidorudo Sukebe Chinpo-bu #Sakuya Shirase

[Yamada Yuuya] Hikage no Hana [Chinese]

[SG (Tsure, hakusen, eniguma)] Zenbu tanin no seida… ! ! [English]

[remora works] FUTABOKO CO -Aurora- Vol. 2 [English] [Kusanyagi]

[chested (Tokupyon)] Nishizumi-ryuu Iemoto no Sodatekata - Maho no Baai Jou (Girls und Panzer) [Digital]

(SC16) [Koala Machine (Tokiwata Miki)] Taiyou no Gravity (One Piece) [English] [Alastair]

(C92) [Tetchan Hato (Minasuki Popuri)] Himawari Kansatsu Nikki | Sunflower observation diary [English] [ATF]

(Kouroumu 13) [Konpekitou (Touya)] Maid Flandre Kansatsu Nikki - Maid Flandre observation diary (Touhou Project)

[Medetasi (Mokuseirokku, Kureshima Hirohito)] Futanari Mahou Koukogakusha no Junan

Yuutousei Doronuma Kansatsushitsu | Honor Student in the Quicksand Observation Booth

My Big Brother Was Making a “Little Sister Observation Record,” So I Pretended to Have Zero Sexual Knowledge and All Sorts of Things Were Done to Me

[NeonSign (DRE)] Neon's Report - Fukugougata Shukushou Gas no Kouka Sokutei | Neon's Report - The Observer Effect On Shrinking Gas [English] [Anonymous] [Digital]

[Nagi Wataru] Burlesque Night | 艳舞荒诞夜 [Chinese] [拾荒者汉化组] [Digital]

(C91) [Kedama Gyuunyuu (Tamano Kedama)] Flan-chan ni Oshiete Ageru (Touhou Project) [English] [Cecilbk]

Asakaze to Sugosu Asa

[Sanbun Kyoden] Observer (COMIC HOTMiLK Koime Vol. 5) [English] [Digital]

Koe ga Dechau

ABDUCT～Ike Nai Shiiku Kansatsu ～ | ABDUCT ~The Wrong Breeding Observation~

Houkago Koubi Doukoukai e Youkoso!! 2 | Welcome to the Afterschool Breeding Club!! 2

(C53) [Kohakutei (Sakai Hamachi)] Eden -Yui- (Neon Genesis Evangelion) [English] [Ihocheso]

(C80) [Kouzaka-san, Makino Jimusho] SISTERS - Kakusareta Kioku, Natsu no Owaranai Hi (SISTERS -Natsu no Saigo no Hi-) [English] {doujin-moe.us, Fuwafuwaru}

[Akuten Soushin (Kokutou Nikke)] Sanae-san ga Kitanai Ossan ni yatara to Kichiku Ryoujoku Saremakuru Moriya Jinja (Touhou Project) [Digital]

Kimi to watashi no ren'ai jijō - A SECRET - sample

Sexy Undercover Investigation! Don't spread it too much! Lewd TS Physical Examination Part 2

(C88) [ALMISM (Minatsuki Alumi)] Bitter na Coffee to Sugar na Milk "Koi no Lingerie Attack"

Atsugari Skadi-sama

Mujikaku Service Shite Kureru Kouhai no Imouto-chan

[Kuritsu Yoshihiro] Marutto Kansatsu♡ Inkou Kyoushitsu - Let's Observe a Public Fuck in a Classroom

(C84) [Mieow (Rustle)] Little Girl 7

Toshishita Shounen ni Chinko no Size de Makete, Kanojo o Netorareru | BOY with a bigger dick than mine

Risa Hayami

Honor Student in the Quicksand Observation Booth

Nyuugyuu Kankei-san

(C82) [MAXI AGE (Yamaishi Joe)] Fushoku no Kajitsu | The Color of Decay (Queen's Blade) [English] =LWB=

Jinbobo ~Abunai Shiiku Kansatsu~ | Jinbobo ~The Dangerous Breeding Observation~

Yakusoku no Yukue

(C75) [abgrund (udk)] BD! (Narutaru) [Sample]

[Sanbun Kyoden] Observer (COMIC HOTMiLK Koime Vol. 5) [English] [Digital]

[Umino Sachi] Mama no Koibito | Mother's Lover (Jukubo Yuugi) [English]

Nankyoku no Ofuroya-san

(C54) [Chimatsuriya Honpo (Asanagi Aoi)] EVANGELIUM AETERNITATIS Eien Fukuinsho ii (Neon Genesis Evangelion) [English] =Tonigobe=

COMIC Magnum Vol. 61

(COMIC1☆6) [40010 1-GO (40010Prototype)] SAKKN Shinobu no Araragi Koyomi Kansatsu Nikki | SAKKN - Shinobu's Observation Diary of Araragi Koyomi (Bakemonogatari) [English] [QB-TL + doujin-moe]

Kitou no Yaiba | 亀頭之刃

High Teen Boogie Woogie

[Aoi Hitori] Ana ume Anal Duma (Bishoujo Kakumei KIWAME 2011-12 Vol.17)

(SC2015 Winter) [Waffle Doumeiken (Tanaka Decilitre)] Tenshi no Oshigoto (Yoru no Yatterman)