(C72) [Momoiro Toiki (Meramera Jealousy)] Zoku Futago Toast
[Usacastle (Usashiro Mani)] Totsugeki Futago Succubus-chan 3 [Digital]
Tobira no Soto ni Ke tsuya no Ii Neko ga ita no de, Shitsukete Kaineko ni shite miru Challenge.
[ViperXTR] I Challenge You! (Kono Subarashii Sekai ni Syukufuku o!) [English]
Niizuma Futago Life Ch. 1-17
[KAREHANEKO (Himitaka)] Extend Hiryuu Challenge (Strider Hiryuu) [Digital]
(C90) [Carnage Engine (Bakudanbonbon)] Da Futago Kouhosei (Hyperdimension Neptunia) [English] [potocat]
One-shota Challenge
[Kouchaya (Ootsuka Kotora)] Futago to Maou | Twins And The Demon King (Maou Gakuin no Futekigousha: Shijou Saikyou no Maou no Shiso, Tensei shite Shison-tachi no Gakkou e Kayou) [English] {Doujins.com}
[Itami] Futago Caste ~HiRea Aniki no Gyakushuu Saimin~ (2D Comic Magazine Otokonoko o Shiriana Kairaku de Mesu Ochi Ryoujoku! Vol. 1) [Chinese] [瑞树汉化组] [Digital]
CUBE Kurano kunchi no Futago Jijou Visual Fanbook
[mizu] Nakama de Pokapoka (Kids Challenge) [Chinese] [Befreiungsfuehrer第三次个人汉化]
(COMIC1☆7) [ASIANBOY (Hasemi Ryo)] Backstage Hibiki Challenge (THE IDOLM@STER) [English]
(SUPER11) [Astonish (Naitou Naito)] Kodomo Challenge (Various)
(C68) [Kobiran House (House Kobiran)] Futago no Himegoto (Various)
Namaiki Kuchikukan Wakarase Challenge
Iemoto Challenge Series - Jinrui Hasshou no Chi de Mikai no Buzoku to Bunka Kouryuu Isshuukan
[Satuyo] Pool de Challenge! Boyish | Challenge at the Pool! Boyish (Peaceful Ecchi!) [English] [Doki Fansubs+Yosh]
(C86) [Contamination (eigetu)] Maki Nico Lez Challenge (Love Live!) [Incomplete]
U Challenge
(Puniket 13) [Studio Rakkyou (Takase Yuu)] Fukanzen Nenshou 13 (Fushigiboshi no Futagohime)
Mesuiki Futago
Kyokon Shoujo Nyoudou Challenge!
Hentai Futago 10
[Seven Days Holiday (Shinokawa Arumi, Koga Nozomu)] Ane no Kawari ni Namaiki na Futago Shimai o Saikyouiku? [Chinese] [一只麻利的鸽子汉化] [Digital]
(C86) [Marked-two (Hideo)] Taihou Challenge! (Kantai Collection -KanColle-) [Chinese] [CE家族社]
[Irojikake Matome Blog (Kurokawa Otogi)] Renzoku Kyousha Challenge (Paizuri Senmon Zasshi "Zettai Chichi Kyousha" Vol 1) [Textless]
[Terujirou] Junior Dominating Senior Challenge!
[Shotaian (Aian)] Onoko to. ACT 5 Futago Onoko [Chinese] [夏月兔个人汉化]
(C71) [Gorotaishi (Gorohati)] Bijutsushitsu (Fushigiboshi no Futago Hime)
(Puniket 11) [PetaPetaDan. (Deden♪)] Futahime Alternative (Fushigiboshi no Futagohime)
Futago Ane
Namanama Shandy Gaff (nf4)] Lap-sama no Dosukebe AV Challenge ~ Jokanbu o Soete (Laplus Darknesss, Takane Lui) [Digital]
(C87) [Ice Sugar (Utano)] stalk Futago Kan part1 [Chinese] [樱丘汉化组]
Ane☆Volleyball Challenge
Himitsu no Futago Hime
[Deriya (Deriken)] KURATA (Kanon) [English]
(C101) [chori (Chorimokki)] Nanjamo to Ura Gym Challenge!! | 奇树的秘密道馆挑战!! (Pokémon Scarlet and Violet) [Chinese] [我今天爆炸了个人汉化]
Futago Caste ~HiRea Aniki no Gyakushuu Saimin~
Futago no Iyashi - Twins Healing
Aisha Challenge 4
(C92) [MeltdoWN COmet (Yukiu Con)] Kanade Challenge Zenpen
Futago no Umibe Nuchinuchu Hon
[Alpha to Yukaina Nakamatachi (Alpha)] Itoko no Futago to Christmas. | 雙胞胎表妹與聖誕節 [Chinese] [SingleG漢化] [Digital]
(C93) [IRON FIN (Tethubire)] Bote Colle 7 ~ Futago no Saratoga (Kantai Collection -KanColle-)
(C97) [DECOPPACHI (Hidiri Rei)] DT Chinpo 100-pon Acme Challenge!! (Kiratto Pri Chan)
Renzoku Kyousha Challenge
[Pyonchi Koubou (Pyonchi)] Dosukebe Muramatsuri 1 - Jigoku no Cli Zeme Mesugaki Taikyuu Renzoku Acme Challenge Hen
[Kawai] ETD Challenge.
Futago to Maou | Twins And The Demon King
[Yukiu Con] Saikyou Futago Party Ch.1-2
(C99) [Watakubi (Sasai Saji)] Futago shimai no mitashi-kata 1 ~ moshimoshi etchi-hen ~ [Chinese] [绅士仓库汉化]
(C69) [Aneko no Techo (Koume Keito)] Futago Himegoto (Fushigiboshi no Futagohime)
Space Detective Jade Dan Indecent Challenge
(C93) [Unagiyasan (Hanamiya Natsuka)] Otona Challenge!!
Watashi ni wa Futago no Ani ga Orimashite.
[IRON FIN (Tethubire)] Bote Colle 7 ~Futago no Saratoga~ (Kantai Collection -KanColle-) [Digital]
I Challenge You!
[Shomu] Futago ni Shihai o - Dominate Twins (ANGEL Club 2016-02) [English] [CGrascal]
[gallery walhalla (Kanoe)] Hentai Futago no Yuujin [Digital]
Futago Succubus to Mahou no Onaho
(C68) [USO Seisakujo (Harukaze Unipo)] Happy Smiling Prince. (Fushigiboshi no Futagohime) [English]
[gallery walhalla (Kanoe)] Hentai Futago no Natsuyasumi [English] [Digital]
[Mauve (Oniben Katze)] dog eat dog era ~Ryuujinzoku Dorei no Futago to Saimin Koubi~ [Chinese] [路过的骑士汉化组]
[Mizu] Ana no Toriko (Kids Challenge) [Chinese] [Befreiungsfuehrer第四次个人汉化]
(CR37) [Marchen Box (Various)] Kaitei 8-sai 117cm (Fushigiboshi no Futagohime)
Rinjin no Futago ni wakara SEX shitai
Double Up Challenge!
(C95) [Fuwatoro★Marinepolis (Sumitomo)] Theater Challenge (THE IDOLM@STER MILLION LIVE!)
Flan-chan no Saimin Nikubenki Challenge
Geneki Super Idol Ikaseai Challenge! Clear de 100-man Yen! Shippai Suru to AV Debut!?
[Shomu] Futago no Manga.
(Puniket 15) [Shamon Tei (Shamon)] Hadaka no Oujisama (Fushigiboshi no Futagohime)
Kodomo de Challenge 2
Ryuujin Futago no Omotenashi
(C83) [Alpha to Yukaina Nakamatachi (Alpha)] Itoko de Futago no Ane Takanashi Sui
(SC31) [Shiwodou. (Shiwo.)] Gyu!tto Omohi de Haru (Fushigiboshi no Futagohime)
Seieki Tamekomi Challenge
(C89) [MINAMOON (Minazuki Futago)] Gakkyuu Iinchou Hazuki no Baai [Chinese] [CE家族社]
Hentai Futago no Natsuyasumi 2
Kasen-chan no Jasen Rouraku Challenge
[Aihara Hanten (Aihara Shouta)] Futago wa Kimi ga Suki!! "Ryoumimi kara Ecchi na Saimin Kakechatta" [Digital]
(Futaket 8) [Oshiruko Kan (Piririnegi)] Twin Prime 2 ~Futago no Omocha Asobi~
[Yukiyanagi] Shikatte! Futago Shimai | Scold Me! Twins Sisters (Complete) [ENG] [Yoroshii+SGC]
Futago JK ni Oji-san ga Gyaku Rape sarechau Ohanashi.
[Taikan Kyohougumi (Azusa Norihee)] Sakura-chan to Oshigoto Challenge - Ona-Hole Challenge with Sakura (Cardcaptor Sakura) [English] [Digital]
[MuchiMuchi 7 (Hikami Dan, Nekomaru)] Muchimuchi Dream 4 "Futago Shimai no Seikyouiku" (Dragon Quest IV) [Digital]
(Princess Festa) [Luciferhood (Uchouten)] Sakuranbo Kyoudai (Fushigiboshi no Futagohime)
Kagi Kyacchi Charenji | Key Catch Challenge
At first glance, it looks like a man swimsuit challenge + Textless + Bonus
(C101) [chori (Chorimokki)] Nanjamo to Ura Gym Challenge!! (Pokémon Scarlet and Violet)
[Kuuronziyou (Okamura Bonsai)] Kuuronziyou 14 (Fushigiboshi no Futago Hime)
Kanako Challenge
Futago Uri
(C69) [MünchenGraph (Kita Kazuki)] Ochame na Futago 2 (Fushigiboshi no Futagohime)
[Tinker Bell] Hobosan to Issho! -Futago to dekirumon- from BugBug Comic
[Wasukoro (Nukobao)] H na Futago wa Nichijouchahanji. [Digital]
Oshikko Challenge!? | 小便挑战!?
(C97) [Yuasa Rengou (Jean Louis)] Tanpan Kozou no Oppai Gym Challenge! | A Boy In Short's Big Breasted Gym Challenge! (Pokémon Sword and Shield) [English] {Doujins.com}
Futanari Milk Challenge
Matsuno Osomatsu no Sex Challenge
[InuCream (InuCreamice)] 100 day TS challenge (chinese)
Utsuho Challenge!!
[Yurushite Ochinti Kyo (Yuruchin Kyouso)] Elf Futago ga Yome ni Kita Hi [Digital]
[Utsutenkai (Shirizou)] Katabutsu Iinchou to NTR Play ni Challenge Suru Hon / Book About A Tightly Wound School Council President Challenging Herself To Do Some NTR Play [English] {Doujins.com}
(C85) [MINAMOON (Minazuki Futago)] Seitokaichou Kagura no Baai
[Kidocch1] Cute Jolyne Lewd Challenge (Revenge Edition) + Extras (Jojo's Bizarre Adventure) [Cryptic_P]
(C93) [Aozora Shoujo (Shirane Taito)] Rika no Oshiri Challenge (THE IDOLM@STER CINDERELLA GIRLS)
[Mikeke] Hatena Manga - Semete Yacchae! (Challenge First-Year-Student)
(C70) [So-matou (So-ma)] Kodomo ja Neenda Princess nanda! 3 (Fushigiboshi no Futagohime)
Kamura no Sato no futago mesuonaho
#SoniCha Ikuiku Challenge
(SC50) [Shioya (Shioya Maico)] Futago no Sotsugyoushiki (Star Drive: Kagayaki no Takuto)
[Hogero Kikaku (Bloomer Hogero)] Mudai (Fushigiboshi no Futagohime)
(C86) [Marked-two (Hideo)] Taihou Challenge! (Kantai Collection -KanColle-)
[Konbu-Maru] Kyonyuu Mama to Futago | Busty Mom and Twins [English] [Amoskandy]
Goki Futago
Futanari Milk Challenge 2 | 扶她榨乳挑战2
[Amagami Dou (Sirpent)] Niizuma Futago Life Ch. 1-17
(C65) [kodomo challenge (Various)] Shukudai ga Owaranai
Akane Challenge!? 2
DT Chinpo 100-pon Acme Challenge!! | 100 Virgin Cock Orgasm Challenge!!
(C93) [ANDOROGYNOUS (Kiyose Kaoru)] Futanari Milk Challenge 2
(C81) [Futagotei (Futago)] Ichiban no Takaramono 3 (Angel Beats!) [English] {EHCove}
(C69) [Nyan Nyan Nyan!] Rennyuu ZANMAI (Fushigi Boshi no Futago Hime)
[kogasaki yuina] JK Mamamo No Shuugakuryokou Oppai Challenge | JK玉藻的畢業旅行ㄋㄟㄋㄟ大冒險 [Chinese] (Fate/Grand Order)[三色的大猩猩翻譯同盟]
Futago no toroke ai(Fire Emblem - Three Houses) sample
(Puniket 12) [Tokuda (Ueda Yuu)] Yacchaou! (Fushigi Boshi no Futago Hime)
Twin Gravitation | Futago Inryoku
(C68) [RIROLAND (Kuuya, Satomi Hiroyuki)] Diamond wa Kudakenai (Fushigi Boshi no Futago Hime)
[dotsuco] Nametake Challenge!
(Utahime Teien 4) ["Tsu" ga Mittsu. (Tsuttsu)] Akane Challenge!? 2 (THE IDOLM@STER CINDERELLA GIRLS)
(C88) [Ice Sugar (Utano)] stalk Futago Kan part2 [Chinese] [樱丘汉化组]
(Puniket 11) [Aneko no Techo (Koume Keito)] Futagohime Copyshi (Fushigiboshi no Futagohime)
(C71) [Circle Heron (Shiramayumi)] MAGEJUN vol. 20 (Fushigiboshi no Futago Hime)
Namaiki Kuchikukan Wakarase Challenge | I'll Make You Understand Challenge
Hentai Futago no Yuujin 3
(Kanojotachi no Neiro) [IncluDe (Foolest)] Hime hime (Fushigi Boshi no Futago Hime)