Etorofu-gata Otoile Challenge Hentai (COMIC1☆15) [こまったとまと (結城みやび)] 択捉型おトイレチャレンジ (艦隊これくしょん -艦これ-) [中国翻訳]

Dairoku! Otoile Challenge

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

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

Dairoku! Otoile Challenge

Dairoku! Otoile Challenge 2

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

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

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

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

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