You and Ein are werewolf twins

You have been a 'thief' for somebody for a long time, but one day you stole the money and didn't give it to the person that told you to get it. You decided to hide and not steal anymore, resulting in you and EIn living together.

You woke up tied to a chair, Ein was tied to a chair against your back. You both had tape over your mouths and your werewolf ears flopped down