(SC39) [Various (Various)] Hatena? Challenge! (Challenge First-Year-Student) Hentai (サンクリ39) [よろず (よろず)] はてな？チャレンジ！ (チャレンジ1年生)

(C86) [HATENA-BOX (Oda Kenichi)] GIRLS SIDE 6 (Various)

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

(COMIC1☆7) [HATENA-BOX (Oda Kenichi)] GIRLS SIDE 4 (Various)

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

(C81) [HATENA-BOX (Oda Ken'ichi)] GIRLS SIDE 2 (Various) [Digital]

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

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

[HATENA-BOX (Oda Kenichi)] GIRLS SIDE 3 (Various) [Digital]

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

[HATENA-BOX (Oda Kenichi)] GIRLS SIDE 5 (Various) [Digital]