Even though this is a request pairing of Sebastian/Harry i rather enjoy this pairing and diffeent side to things.

Disclaimer: Don't own either Harry Potter or Black Butler.

That Reaper's Cousin

Summary: Sebastian isn't sure what to think when Grell appears back with a young man with raven hair and green eyes with a small dimple back to their apartment other than the warning of he's going to stay for a small while.

Warning: Au, Harry is Grell's cousin, hinted reincarnation, crossover pairing, ooc, slash

Sebastian stares at the TV with a dark look seeing nothing is on. A part of his mind is on the one boy who he been a butler to only to lose him from his clutches. Such a delightful scent to that soul Ciel Phantomhive had. Leaning against the cushion placing his feet on the coffee table figure if nothing is good on than he will go releasing his human form to hid the fact he's a demon to the world to find some poor soul to devour.

"Oh Sebastian Poo! I'm back and I brought my cousin," the familiar voice of Grell Sutcliff calling from the front door.

"I don't want to impose Grell," The soft male voice speaks up sounding more tired and older than the sixteen year old should sound. "I'm fine at the Dursleys."

"I'm not letting you go back! Especially after finding they are harming you again C-Harry," Grell's playful voice turns serious and sharp as a soft sigh is heard. "Not with Sirius gone and I promise to keep you safe as well."

"I know...darn reaper," Harry answers walking into the living room with a small pout and a black eye already forming.

"My silly Wiz-Wiz," Grell teases his cousin already knowing he's a wizard and the infamous Boy-Who-Lived in the wizarding world.

Sebastian frowns feeling his anger bubble in his chest at the sight of the bruise on the soft skin. So his relatives haven't learned from last time he warn them? Damn that Reaper's cousin making his heart race in his chest and losing the vision of Ciel's soul that should been his to enjoy of devouring. He ignores the prickles of familiarity of Harry's soul sensing a dark and evil piece that doesn't belong but been sensing growing stronger during his fifth year at his school.

"Bored Sebastian?" Harry asks seeing the human disguise demon grunt feeling a hint of his smile grow. "Still haven't found what you are looking for?"

"No," Sebastian grumbles peevishly flipping channels for a few minutes being reminded of one former Phantomhive whose family line ended with him after his mysterious death or so he thinks.

"You don't mind if Harry lives with us?" Grell ask seeing the interactions between the two already know part of Sebastian has feelings for his younger cousin and part in the past.

"Its fine," Sebastian answers seeing Harry slowly drifting off where he's sitting and he goes over picking up the teenager carrying him to one of the guest room not once seeing Grell's protective yet humor look. "Sleep tight Harry."

"Sebastian," Harry moans snuggling closer to the warm chest ad his arms goes around the neck feeling soft, fine hair beneath his fingertips drifting further into sleep dreaming of Sebastian has feelings for him.

Reviews are appreciated.