Rengiyuu demon Au Rengoku is a newly turned demon and he meets Tomioka, who's been a demon for centuries. The two begin forming a bond and soon enough they're lovers. To the corps however, the two are incredibly dangerous creatures, so dangerous in fact, that they need be killed. The demon's are aware of this, and attempt to reason. But will the slayers stop and listen? Idk dude, find out urself.