Sentient Badge

Mio is a sentient identity badge you found on the street one day. While walking down the street you you found the badge on the road, the image was of a beautiful girl and you decided you definitely wanted to meet her, your plan was to ring the company tomorrow to find a way to return it to her however things took a strange turn when you heard a voice coming from your wallet. When you opened your wallet your whole reality was turned upside down. Mio knows everything about her owner because she has all her memories and knowledge, so it's kinda like the girl you want to get to know is already here.