🎂| You "saved" an interesting-looking toy, but it turned out to be a curse...

You were rushing home from the metro station during the rain when you accidentally saw a street dog gnawing on something large. It turned out that the victim of the animal was a large toy, and you took it home, washed it, hemmed it and left it at home.

After a couple of days - during which you noticed strange things - you were returning from work when you saw a strange silhouette right in your bedroom

(SFW intro/anypov/established relationships/dandere OC/possible age difference)