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Kasshoku Oneesan no Fudeoroshi Ver.4.1

[Irojikake Matome Blog (Kurokawa Otogi)] Renzoku Kyousha Challenge (Paizuri Senmon Zasshi "Zettai Chichi Kyousha" Vol 1) [Textless]

Monthly Vitaman 2007-06

Monthly Vitaman 2009-02 [Incomplete]

[Corundum] A Challenger Has Appeared Which Naturally Leads To A Duel | Chousensha ga Arawareta - Shizen na Nagare de Kettou (Fate Grand Order) [English] [FMLTranslations]

[Usakun] Kongetsu no Wanko. | This Month's Doggy (Hatsukoi! Lyrical H) [English] [Digital]

Otou-san Challenge

(C86) [Contamination (eigetu)] Maki Nico Lez Challenge (Love Live!) [Incomplete]

(C90) [Akausagi (Fukuyama Naoto)] 100 challenge (Hundred) [Chinese] [清純突破漢化]

(C93) [ANDOROGYNOUS (Kiyose Kaoru)] Futanari Milk Challenge 2 [English] {Hennojin}

Dairoku! Otoile Challenge2

(Futaket 14) [ANDOROGYNOUS (Kiyose Kaoru)] Futanari Milk Challenge 3 | 扶她榨乳挑战 3 [Chinese] [黄记汉化组]

Gekkan "Za Bicchi" wo Mita Onna no Hannou ni Tsuite | About the Reaction of the Girl Who Saw "The Bitch Monthly"

[Kikkaya (Uesugi Kyoushirou)] Haruka Challenge [English] [Scansforhumanity]

Monthly Vitaman 2015-10

Monthly MelomELO Feb.25,2013

[Momonosuke] Sex Communication (Monthly Vitaman 2017-01) [Chinese] [不負責任個人漢化]

You Are Challenged by Kogal Takuha | La Sfida

Kasshoku Onee-san no Fudeoroshi Yume to Kibou no Bikini Armour

(C93) [Milk pudding (Jamcy)] Akane-chan Challenge! 2-kaime (VOICEROID) [Chinese] [脸肿汉化组]

After A Month

(C86) [Yamakawa Den'enfuukei (Yamada, Kawada)] HERE COMES A NEW CHALLENGER!! (High Score Girl)

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Monthly Vitaman 2018-06

Monthly Vitaman 2014-12

Monthly Vitaman 2017-11 [Digital]

Captain Saimin Icha Love Challenge

Monthly Vitaman 2011-07 [Digital]

(C93) [Unagiyasan (Hanamiya Natsuka)] Otona Challenge!!

Shizuku Challenge! Takumin Hitsuji-san no Chichishibori! RX

Monthly Vitaman 2009-11

[Gojarun no Ozashiki (Gojarun)] Nantaika Triad to Yukai na Nakama-tachi Ochinchin Challenge Hon (THE IDOLM@STER CINDERELLA GIRLS) [Digital]

(C92) [Slime Kikaku (Kuriyuzu Kuryuu)] Akatsuki no Oyome-san Challenge | Akatsuki's Bride Challenge (Kantai Collection -KanColle-) [English] {Doujins.com}

Waltz of the month (only first half)

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

(C92) [K+W (Sasachinn)] Hatsuzuki to Muremure Muramura Natsu Ecchi! | Having Stuffy Sex On The First Month Of Summer! (Kantai Collection -KanColle-) [English] [Doujins.com]

Saimin Tengoku Challenge 05

UNKNOWN UNLOCK CHALLENGE | 크로스비츠 동인지

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

(C90) [Akausagi (Fukuyama Naoto)] 100 challenge (Hundred) [English] [Tigoris Translates]

Kasshoku Oneesan no Fudeoroshi Ver.4.1 

[Jyoka] Igyou Kaikitan Hasshaku-sama (Monthly QooPA 2014-12) [Digital]

[ro] Ookami to Akazukin Ch. 3 (Monthly QooPA 2014-11) [English] [Kappasa] [Digital]

Monthly Vitaman 2018-02 [Digital]

Akane Challenge!? 2

Kurokoshi You] Challenge Week

(Warabe Jitsuno Koukou Bunka Matsuri Duel Carnival) [Michu★Honey (Hikari.)] Kattobingu wa Challenge tte Kotoda ze! (Yu-Gi-Oh! Zexal)

Futanari Milk Challenge 5 | 迫真水泳部・扶她的里技―第五章

Monthly Vitaman 2016-11

Jisatsu Challenge | 自殺挑戰

Monthly QooPA 2014-08

Nametake Challenge!

[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Lolita Complex [Digital]

Girls from a Prestigious School Challenged to an Escape Game

Monthly Vitaman 2011-07

Male Swimsuit Challenge

(C94) [Sakura Garden (Shirosuzu)] Chaldea Outdoor Challenge Abby-chan to Issho (Fate/Grand Order) [Chinese] [脸肿汉化组]

Kids Challenge

[Kidocch1] Cute Jolyne Lewd Challenge (Revenge Edition) + Extras (Jojo's Bizarre Adventure) [Cryptic_P]

Monthly Vitaman 2015-04

Monthly Vitaman 2017-12 [Digital]

[MelonBooks] Monthly MelomELO Jun.2014

Toka 1 hour drawing challenge

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

Monthly Vitaman 2017-09 [Digital]

Monthly Vitaman 2010-02

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

Kanoka Challenge_plot 2

[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]

[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Oneesan no Fudeoroshi Ver. 5

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

Futanari Milk Challenge 3 | 迫真水泳部・扶她的里技―第三章

Monthly Vitaman 2006-09

[Toufu Insider] Saimin Appli Challenge!!

Bodyswap between a monther and her son

Once A Month Visitor

（C96） Dairoku! Otoile Challenge

Monthly Vitaman 2007-09

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

Monthly 'Aikawa' The Chief Editor Chp. 3

Pancakes Challenge

(COMIC1☆7) [ASIANBOY (Hasemi Ryo)] Backstage Hibiki Challenge (THE IDOLM@STER)

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

[Karma Tatsurou] Oo Tsuma (Monthly Vitaman 2011-12) [Digital]

Monthly Vitaman 2014-07

Kanade Challenge Kouhen

(C93) [Unagiyasan (Hanamiya Natsuka)] Otona Challenge!! [Chinese] [脸肿汉化组]

Maki Nico Lez Challenge

Aisha Challenge 4

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

Hitori Challenge Rakugaki

(C63) [Kodomo Challenge (various)] Mainiti-ga-Kodomo-no-hi

Monthly Vitaman 2009-10

Six Fanarts Challenge NSFW Pack

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

[ro] Ookami to Akazukin Ch. 2 (Monthly QooPA 2014-09) [Digital]

(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]

(COMIC1☆7) [ASIANBOY (Hasemi Ryo)] Backstage Hibiki Challenge (THE IDOLM@STER) [English]

[The Monthly Istanbul (Ahugan Sugita)] Bikyaku Zukan (Various) [Digital]

Monthly QooPA 2015-01 [Digital]

MONTHLY THE IWATOVISION

[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Oneesan no Fudeoroshi Ver.4.1

[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Onee-san no Fudeoroshi SNS wa Kiken na Nioi [Chinese] [cqxl自己汉化]

Yuusha no Sairokubon Challenge

[The Monthly Istanbul (Ahugan Sugita)] Kasshoku Oneesan no Fudeoroshi Ver. 3 [Chinese] [cqxl自己汉化] [Digital]

(C83) [Algolagnia (Mikoshiro Honnin)] Monthly Margareta Vol. 1 Event Henshuuban

DokiDoki Mesuiki! Challenge!!

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