Despite a bite and eye contact, Kouhei won't fall under Hazuki's will. As Seiji battles Vigo at the castle entrance, Hazuki leastwise persuades Kouhei that she will be free and all will be well it he can break a crystal ball mounted at the castle's north end. He, of course, does, breaking a major enchantment. Hazuki thereby disappears; but, as Kouhei returns home to Japan, he finds she's decided to become part of his life.
—statmanjeff