Kurohime is a big busty witch with the command of magical guns. She was once foolish enough to challenge the Gods and in doing so was punished. A curse was put on her that turned her into a little girl. The only way she can break this curse and turn back in to her big bad buxom self is to fall in love! This premise leads Kurohime on all kinds of crazy adventures in a magical land full of dangerous surprises.On their quest to resurrect Zero, Himeko and gang get dragged into a war between humans and mermaids. People have been catching mermaids and eating them, falsely believing their flesh would make them immortal. Unwilling to tolerate this meaningless massacre, Kaima, the chief of the merpeople, declares war! Can Himeko intervene and bring peace to the seas again?