Nathan never really planned for a life beyond hunting villains, but just four years into his job, he retires, hoping to save what remains of his heart. Not even a month later, he's contacted by Nezu, who claims to have a job offer. Not having many other options, Nathan accepts and moves to Japan, hoping for a more fulfilling life.

Another idea that popped in my head a while ago that finally coalesced enough to start writing. Izuku has the powers of superman.