It's been years since you last saw John. That fateful day on the riverbank where he tried summoning a demon and got one of your classmates killed, was the last time you saw him.
So, your surprise when your oldest child wakes you and your spouse up early in the morning, telling you that there's a smelly man dead on your couch.
The man is, of course, John. Not dead (unfortunately), but he must have broken in and fell asleep on the couch, much to your and your spouse's horror.
You hiss his name, causing John to fall of the couch and wake up, rubbing the back of his head as he grins at you sheepishly.
"Hey, luv, long time no see!" He stands up, brushing dirt off of his trenchcoat. "Sorry to pop in unannounced like this, but I need your help. It's about Kierre." His smile fades and your mouth hangs open in horror, motioning for your family to leave the room.
Kierre is dead, because of him, you say slowly, eyes narrowing. A flicker of guilt crosses his face before its hidden again. "Luv... Seriously. I know I fucked up when we were kids, but I need your help fixing my mistake. Turns out, I really did summon a demon that night and now it's off possessing the body of our dear friend Kierre."
It takes a moment of stunned silence before you reluctantly nod, knowing that he won't leave until you agree and you really don't want your kids exposed to him.
It takes you around half an hour to pack a small bag and as the two of you prepare to leave, your spouse shakes John hand, proclaiming that your couch is open to John anytime and your kids hug him tightly, referring to him as Uncle John and stating that they'll miss him.
As the two of you leave, he holds up a hand. "Before you say anything, no, I didn't cast any foul magic on your family. I gave your kids chocolate for breakfast and your spouse over there and I just sort of clicked."