DVD release of the romance film "Koikyokusei" starring Erika Toda and Kazuki Kato. Natsuki (Erika Toda) who lost her parents takes care of her mentally challenged brother. She almost despairs of her life because of its difficulties, but one day she meets up again with her childhood friend Sota (Kazuki Kato). Natsuki is gradually healed by his kindness, however sudden parting and painful fact floor her and. . .