Seven year old Nanami's mother has just died mysteriosly. Both greif stricken and scared for her future Nanami is supprised to find that she will be staying with an uncle she didn't even know exsisted. Blade is almost thirty and wants nothing more than to settle down and stablize his on again off again relationship with his almost fiance', however his fast paced, dangerous life and bad past makes it virtually impossible for that to happen. What will happen when their two worlds colide