1 Month Challenge

[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Onee-san no Fudeoroshi Kyou mo Himitsu no Seikatsu Shidou[Chinese] [cqxl自己汉化] [Digital]

Pancakes Challenge

Challenge Hanayome Ichinensei

Waltz of the month (only first half)

JC Chinpo-beya Ikkagetsu Seikatsu Challenge!!

Monthly Vitaman 2013-02

[Fujisaka Kuuki] Opparadise wa Shinryouchu | 欧派天国诊疗中 Ch. 8 (Monthly Vitaman 2018-02) [Chinese] [前线作♂战♀基地] [Digital]

You Are Challenged by Kogal Takuha | La Sfida

[Abubu] Iemoto Challenge Series - Jinrui Hasshou no Chi de Mikai no Buzoku to Bunka Kouryuu Isshuukan (Girls und Panzer)

Monthly Vitaman 2016-02

Dairoku! Otoile Challenge2

Futanari Milk Challenge | 迫真水泳部・扶她的里技―第一章

Chaldea Outdoor Challenge Abby-chan to Issho 3

Dousei Seikatsu Ikkagetsume to Ichinen Ato, Asaokite kara Shuushin made no Hikaku | A Day in the Life of a Couple: Their First Month Living Together vs. One Year Later

Six Fanarts Challenge NSFW Pack

Happy Aphrodisiac Challenge

[Fujisaka Kuuki] Koi Kano x Ai Kano Ch. 21 (Monthly Vitaman 2014-12) [Chinese] [樱翼汉化组]

[Sakura Garden (Shirosuzu)] Chaldea Outdoor Challenge Abby-chan to Issho 2 | Chaldea Outdoor Challenge with Abby-chan 2 (Fate/Grand Order) [English] [The Blavatsky Project] [Digital]

Seieki Tamekomi Challenge

(Futaket 14) [ANDOROGYNOUS (Kiyose Kaoru)] Futanari Milk Challenge 3

[Fujisaka Kuuki] Koi Kano x Ai Kano Ch. 22 (Monthly Vitaman 2015-02) [Chinese] [樱翼汉化组]

[Karma Tatsurou] Saraware (Monthly Vitaman 2012-08) [Chinese]

Monthly Vitaman 2014-04

Ko-Gil Challenge

Chaldea Outdoor Challenge Abby-chan to Issho 3

[FAVORITE] Moe Monthly FAVORITE (core Mook Series 599)

(C78) [WORLD BOX, Bon's (Yuu, Sumeragi Sora)] 2-nen to 8-kagetsu no Kiseki | A Journey of 2 Years and 8 Months (Durarara!!) [English] [ebil_trio]

Yui-chan SEX Challenge!!

Monthly Vitaman 2009-09

Nanjamo to Ura Gym Challenge!! | 奇树的秘密相声挑战!!

Male Swimsuit Challenge

DT Chinpo 100-pon Acme Challenge!!

Aisha Challenge 4

Akatsuki no Oyome-san Challenge | Akatsuki's Bride Challenge

[mizu] Nakama de Pokapoka (Kids Challenge) [Chinese] [Befreiungsfuehrer第三次个人汉化]

[dotsuco] Nametake Challenge!

Flan-chan no Saimin Nikubenki Challenge

Akane-chan Challenge! 2.5-kaime

[Bobobo] Hito Tsukiburi | After A Month (PLDK) [English] =LWB= [Decensored]

Monthly Gekiman Special 2013-06 [Incomplete]

Saimin Tengoku Challenge 06

Monthly Vitaman 2011-07 [Digital]

TS-kko Otokoyu Challenge!

[Juan Gotoh] San Jin San Getsu (Three People, Three Months) Ch. 1-3 [English]

Monthly Vitaman 2012-01

Monthly Vitaman 2006-09

[Mizu] Kids Challenge [English]

Pancakes Challenge | Desafío de Panqueques

(C96) [Akairo Kurena (Kurenai)] Jeanne Alter to Dakkou Challenge!! (Fate/Grand Order)

(Motto Warunodesu... Ouji) [Sakura Garden (Shirosuzu)] Aisha Challenge 4 (Sennen Sensou Aigis)

Futanari Milk Challenge 3

Rika no Oshiri Challenge

Misaki-chan no Lotion Challenge

[ANDOROGYNOUS (Kiyose Kaoru)] Futanari Milk Challenge 3 [Digital]

[Yurikawa] Futago Challenge (Toshiue Kanojo Alternative) [English] [PSYN]

Monthly Vitaman 2009-11

(C92) [Slime Kikaku (Kuriyuzu Kuryuu)] Akatsuki no Oyome-san Challenge (Kantai Collection -KanColle-)

Monthly Vitaman 2008-11

[Kogasaki Yuina] JK Tamamo no Shuugaku Ryokou Oppai Challenge (Fate/Grand Order)

Yuusha no Sairokubon Challenge

fav*exp15 ○○○Challenge

[Yonemochi Akihiko] adult challenge 1

Monthly Vitaman 2007-08

Yuusha no Sairokubon Challenge

/ruːt/-47th Month

Teisouring Challenge

[Mizone] Onigashima no Kyokon (Monthly QooPA 2014-11) [Digital]

[Kawai] ETD Challenge.

[Shigaoka Touki] Kekkon Suru Nara Mesuneko to (Monthly Vitaman 2015-04) [English] [Krozam]

Kyokon Shoujo Nyoudou Challenge!

Natsukoi Challenge | Summer Love Challenge

Monthly Vitaman 2015-10

(C93) [Aozora Shoujo (Shirane Taito)] Rika no Oshiri Challenge (THE IDOLM@STER CINDERELLA GIRLS)

Manatsu no Drink Challenge

[Shigaoka Touki] Kekkon Suru Nara Mesuneko to | If It's Getting Married, a Catgirl... (Monthly Vitaman 2015-04) [English] [Krozam]

Oshikko Challenge!? | 小便挑战!?

(C93) [MeltdoWN COmet (Yukiu Con)] Kanade Challenge Kouhen

Jisatsu Challenge | 自殺挑戰

Planning AV: One towel men's bath challenge in St. Louis and Honolulu

Tickle Massage Chair Mini - Million Yen Challenge

Monthly Vitaman 2016-12

Petit Xu Lewd Challenge + Extras

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

[Labomagi! (Takeda Aranobu)] Ecchi na Onee-san wa, Suki desu ka? 4 ~Tonari no Onee-san to Ikkagetsukan, Anata no Suki Ho | Do You Like Naughty Older Girls? 4: All You Can Fuck Sex for a Month With the Girls [English] {2d-market.com} [Decensored] [Digital]

Dokidoki Mesu Ochi Gohoushi Challenge

Etorofu-gata Muchikko Kodomo Challenge

[deadflow] Ui (Kukagetsu) | Ui (Eight months pregnant) (Blue Aka-chan IN-bu) (Blue Archive) [Digital]

Zetsurin Challenge

[Algolagnia (Mikoshiro Honnin)] Monthly Margareta inaugural issue "Entrance Information" vol.000

(C92) [Milk pudding (Jamcy)] Akane-chan Challenge! (VOICEROID)

Kasshoku Onee-san no Fudeoroshi Kyou mo Himitsu no Seikatsu Shidou

[Sakura Garden (Shirosuzu)] Chaldea Outdoor Challenge Abby-chan to Issho 3 (Fate/Grand Order) [Chinese] [一只麻利的鸽子汉化] [Digital]

[kogasaki yuina] JK Mamamo No Shuugakuryokou Oppai Challenge | JK玉藻的畢業旅行ㄋㄟㄋㄟ大冒險 [Chinese] (Fate/Extra)[三色的大猩猩翻譯同盟]

An NTR Day Per Month - Husband Pretends Not To See It Before Her

(C93) [MeltdoWN COmet (Yukiu Con)] Kanade Challenge Kouhen [Chinese] [Lolipoi汉化组]

(C97) [Yusei Haguruma (Victanyas)] Namaiki Kuchikukan Wakarase Challenge | I'll Make You Understand Challenge (Azur Lane) [English] {Doujins.com}

[Bobobo] Hito Tsukiburi | After A Month (PLDK) [English] =LWB=

Monthly Vitaman 2009-12

To wa yoku ifu monode

Monthly Vitaman 2013-05

(Utahime Teien 4) ["Tsu" ga Mittsu. (Tsuttsu)] Akane Challenge!? 2 (THE IDOLM@STER CINDERELLA GIRLS) [Chinese] [无毒汉化组]

Monthly Vitaman 2007-08

Kasen-chan no Jasen Rouraku Challenge

[Kyuu (Shooya Akira)] Futtou Challenge 2 (Sora no Manimani)

Space Detective Jade Dan Indecent Challenge

A Challenger Has Appeared Which Naturally Leads To A Duel | Chousensha ga Arawareta - Shizen na Nagare de Kettou

Monthly Vitaman 2015-02

Yuusha no Sairokubon Challenge

Saimin Tengoku Challenge 04

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

One-shota Challenge

Namanama Shandy Gaff (nf4)] Lap-sama no Dosukebe AV Challenge ~ Jokanbu o Soete (Laplus Darknesss, Takane Lui) [Digital]

Monthly MelomELO Feb.25,2013

Petite Jolyne Lewd Challenge + Extras

[Fujisaka Kuuki] Opparadise wa Shinryouchu | 欧派天国诊疗中 Ch. 10 (Monthly Vitaman 2018-05) [Chinese] [前线作♂战♀基地] [Digital]

[Ohmi Takeshi] Gekkan Aikawa Henshuuchou - Monthly "Aikawa" The Chief Editor 1 [English] [redCoMet]

Saimin Tengoku Challenge 05

[Harumi Chihiro] Hoshikuzu Diary (Monthly Vitaman 2007-04) [Chinese]

(C82) [Marin (Suzusato Rinka, Mage)] Doujouyaburi no Kata wa Katteguchi e Omawari Kudasai | Challengers Please Present Yourself At The Back Door (Ranma 1/2) (English) [SaHa]

[Kuon Michiyoshi] HUNDRED GAME Ch. 1 (Monthly Vitaman 2014-10) [English] [Self Translation]

[Kusatsu Terunyo] Homestay Ikkagetsume | 1st Month of Homestay (COMIC Purumelo 2008-11) [English] [desudesu]

Futanari Milk Challenge 4 | 扶她榨乳挑战 4

[Higashino Mikan] Futomomo Sensation! (Monthly Vitaman 2015-10) [English] {NecroManCr}

G◎M

Monthly 'Aikawa' The Chief Editor Chp. 4

(SC39) [Various (Various)] Hatena? Challenge! (Challenge First-Year-Student)

(C95) [Yamitsuki Honpo (Wise Speak)] JK Tamamo no Shuugaku Ryokou Oppai Challenge (Fate/Extra)

Renzoku Kyousha Challenge

(C78) [Dennou Fuyu Mikan (Ueda Rieko)] Otona Challenge (Final Fantasy 4)

Monthly Vitaman 2017-05 [Digital]

[Kuon Michiyoshi] HUNDRED GAME Ch. 5 (Monthly Vitaman 2015-03) [Chinese] [樱翼汉化组]

Kanoka Challenge_plot 2

I-401 Breeding recording + Monthly social gatherings between male and female submarines

[Yurikawa] Futago Challenge | Twin Challenge (Toshiue Kanojo Alternative) [English] [PSYN+DMD]

[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Oneesan no Fudeoroshi Ver. 6 [Chinese] [cqxl自己汉化]

Mont Barbara no Inran Shimai | Mom Barbara's Horny Sisters

[MelonBooks] Monthly MelomELO Mar.2014

Monthly Vitaman 2013-09

(Futaket 14) [ANDOROGYNOUS (Kiyose Kaoru)] Futanari Milk Challenge 3 | 迫真水泳部・扶她的里技―第三章[风俗店篇] [Chinese] [鬼迷日眼的莱科少校个人川话化]

(C83) [Algolagnia (Mikoshiro Honnin)] Monthly Margareta Vol. 2 Event Henshuuban

[Fukumaaya] Uiuishii Imouto | Naive Little Sister (Monthly QooPA 2014-08) [English] [Crystalium]

[d.a.p (mougi)] UnknownUltimateChallenge (CROSS x BEATS) [Digital] [Chinese] [这很恶堕汉化组]

(C94) [Fuwatoro★Marinepolis (Sumitomo)] Theater Challenge (THE IDOLM@STER MILLION LIVE!)

Pancakes Challenge

Monthly Vitaman 2007-01

At first glance, it looks like a man swimsuit challenge + Textless + Bonus

Monthly Vitaman 2018-02 [Digital]

DokiDoki Mesuiki! Challenge!!

DeKatsu no Osasoi Challenge!

(C77) [Kyuu (Shooya Akira)] Futtou Challenge (Sora no Manimani)