Demons rule the world and humanity longs for freedom. Human rebels take hold of the Tenmaken, a sword made for killing demons, and set out to assassinate the Demon King Janus. Princess Hiro, half human and half demon, wants to keep her homeland sovereign, but she must get past her intense hatred of humans or face a war that would devastate the whole world. Adapted from a video game, this two-episode fantasy OVA sets that conflict against her struggle with her own feelings.