Curate, connect, and discover
I've had this ageswap story in my head where as a kid Reigen jumps in the middle of the street to save a dog and he meets Mob when Mob shows up to save Reigen (and the doggo) from oncoming traffic. So Reigen stalks Mob to the office and he's genuinely a good kid because little Reigen thinks it's the coolest thing to help people with your powers and Mob acknowledges this and agrees to take him on as his student