No mercy [Cobra Kai x Male reader]

Disclaimer:I own nothing except Y/N . All rights goes to Netflix and Marvel

„I was beaten my whole life . I don't get to know mercy , so why should show mercy to someone like you"

Dad left him and Y/N have to grown up with his mother only . Before his dad left , he taught his son everything he knew . He taught him how to fight . To protect his family . Even when his dad left , Y/N continue to improving himself . Since he was older he was rageful , and there was someone who want's to use it