(SUPER11) [Astonish (Naitou Naito)] Kodomo Challenge (Various) Pics (SUPER11) [Astonish (内藤騎士)] こどもちゃれんじ (よろず)

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

(C76) [Naitou Satoshi, Klik Klak (Naitou Satoshi, Sokoso)] Shokushu no Tenchou (Touhou Project)

(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]

(Reitaisai 5) [Yuzu_momo Jam (Various)] Gensou Shoujo -Adesugata- (Touhou Project)

(SUPER11) [Astonish (Naitou Naito)] Kodomo Challenge (Various) [English] [CrystalMeph]

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

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

[Astonish] Dotchi o Mukaite mo Uchuu (Galaxy Angel)

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