DNA

"My name is Ethan Canfield Ballard. It wasn't always my name, though. It used to be Pups, Pups Swift, to be exact. Unfortunately, I do not have a good origin story for that name; it seems to be one of those 'always been' sorts of things. Sticky. I survived the orphanage, or vice versa. But once I was out, the wide world was mine. What I didn't know was that a simple blood donation in a truck parked by my favorite library would change everything. Then I met Sean Challe, who had figured out how to turn a profit with my unique DNA ability. That, it turned out, made me special."

That unplanned blood donation set off a cascade of events that identified Pups as a medical miracle of sorts. He was naively sucked into a world where the business of legacy meets the science of blood.