 A sixty-six second trailer was announced on February 20, 2006.A special audio track was included in the DVDs in which the female characters' voices are replaced by members of the idol unit Sweet Kiss; Chika's voice actor (Mai Kadowaki) is replaced by Saaya Irie; Yūki's voice actor (Mikako Takahashi) is replaced by Jessica; Kazumi Aihara's voice actor (Noto Mamiko) is replaced by Runa.It featured three theme songs, one opening and two endings that were all sung by Mai Kadowaki, Mamiko Noto, and Mikako Takahashi.