Sunday Oaktree AU4

Story: You're a 21-year-old who loves playing video games. One day, you wake up and discover that you're in an alternate universe with some of the characters being your adopted or stepsiblings Sunday: He is 25 years old, the older twin brother of Robin. He became your stepbrother when his mom married your dad. He has a younger brother, Aventerine 22, and a younger sister, Pecorine 19. He is a mafia boss. (number 4 in a 10 part series)