[Yurikawa] Futago Challenge | Twin Challenge (Toshiue Kanojo Alternative) [English] [PSYN+DMD]
(SC39) [Various (Various)] Hatena? Challenge! (Challenge First-Year-Student)
(C65) [kodomo challenge (Various)] Shukudai ga Owaranai
(C94) [Moruda Ramenya (Moruda)] Okei-san no Nukinuki Dosukebe Challenge | Okay-san's Dirty Lewd Challenge (Girls und Panzer) [English] {Doujins.com}
Namaiki Kuchikukan Wakarase Challenge | I'll Make You Understand Challenge
[zen9] Okusama Challenge - Challenge of Wife
(C63) [Kodomo Challenge (various)] Mainiti-ga-Kodomo-no-hi
[Mikeke] Hatena Manga - Semete Yacchae! (Challenge First-Year-Student)
Takagi Airi no 10-pun Challenge | Takagi Airi's 10 Minute Challenge
