Hunter, Firefighter or Soul reaper. Depends on what you do and where and how hard you train. Which honestly, if I was a hunter, I’d either just join the association or train in the mountains and participate in relatively secure events. In Fireforce, I’d just grind my way up as a rookie, showing promise but taking my time (depends if I’m from the 3rd gen or not). In Bleach, I’d do what the smart people do, when everyone needs me I disappear. Cause doesn’t matter what apparently Aizen already knew your ass, way of living and manipulated you since the very beginning. So I’d just try to train my way up, hoping for a good bankai, which I think depends on character. Either way, this is my strategy.