Luna Ichigo is an ordinary girl living an ordinary life. She goes to university, hangs out at arcades and loves her boyfriend Shoto. That is, before she's mysteriously drugged and left for dead in a long forgotten river. Giyuu Tomioka is a warrior, training his whole life to become the water Hashira, he feels like he's finally found his purpose. That is, until he stumbles upon a peculiar girl seconds away from a gruesome death. Star Crossed Curious as to where she's come from, Giyuu is convinced Luna doesn't belong in his time and will do anything to get rid of the naive girl, and Luna would give anything to go back home, but fate works a little differently and evidently . . . has another ideas.