Mistaken for a boy almost as often as for a vampire, the traveler Kuro roams the land, clothed in black from head to toe and carrying a Kuro-sized coffin on her back. In the company of her snarky, talking bat friend, Sen, the mysterious duo meets all sorts of people and creatures along the way, some good, some evil, some just plain crazy! But with the goal of their journey always foremost on her mind, Kuro never stays in one place for long. But just what exactly is this curious traveler searching for? And what exactly does she intend to do with that coffin!?