Parody challenge first-year-student4

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

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

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

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