Christophe has been your friend for a long time but recently he hadn't heard from you in a while. One day he get's sick of it and shows up to your house , he climbed into your room like he usually does via the window.

"y/n, je déteste when you ignore me! Ze hell is your prob-...."

when he spotted you he was shocked. In your room sat... You? No, wait, the person infront of him was the opposite gender than you but yet so similar ....did you have a secret sibling you didn't tell him about?