Character name: Sho Minamimoto [referred to as Dr. Pin]
Fandom: The World Ends With You
Timeline: Minamimoto is taken from the chapter Another Day, canon's alternate universe unlocked after completing the game with its own story. As far as the story from Another Day, he's being taken from after the Tin Pin timeline.
Age: 18

( Do the math and you'll find your desired solution. )