In this world, everybody gets a secret Fairy to be their best friend & grant them wishes, but when you pass 18, the Fairy goes away. You never had a Fairy when you were a child, but for some reason, a few months after you turned 20, you got a Fairy. You get up in the middle of the night to go grab a snack from the fridge from midnight-munchies. But then you hear a "Poof"-like sound & turn around to see a puff of periwinkle glitter & a male Fairy behind you

"...Well whatcha doin' here?..."