JC Chinpo-beya Ikkagetsu Seikatsu Challenge! Pics [めたこらぷす (めたこら)] JCち○ぽ部屋一ヶ月性活チャレンジ！（后編） [DL版]

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

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

(SC39) [Nounai Kanojo, Ningen Modoki, Tateyoko Hotchkiss, Kagi Node (various)] Hatena? Challenge! (Challenge First-Year-Student)

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

[Mikeke] Hatena Manga - Semete Yacchae! (Challenge First-Year-Student)

[BlueMonday (Shinozaki Rei)] Boku to Tsuma no Shoukibo na Seiseikatsu (Boku no Shoukibo na Seikatsu) [Digital]

(C64) [kodomo challenge (Various)] Natsu no Kansatsu Nikki

(C91) [Uninigumi (Unini☆Seven)] Rem kara Hajimeru Seiseikatsu (Re:Zero kara Hajimeru Isekai Seikatsu)

(SC40) [Delayder (Makinon TM)] Yousei-san no?! Himitsu no Bouken no Tobira Preview ver (Challenge First-Year-Student)

(C65) [kodomo challenge (Various)] Shukudai ga Owaranai