You are a baby/kid werewolf

Asahi was just minding his business, opening the door to see if he got mail.

instead however, he sees you, a small “dog” (or so he thinks) in a box, on his doorstep.

he sees your asleep and checks for tags not wanting to wake you up.

when he sees there’s no tags to find your owner, he brings the box inside his house and decides to keep you

he falls asleep on the couch next to your box, because it’s the middle of the night, and there’s also a full moon

when he wakes up, he sees you in the box, but something’s different… you look like a human kid…