Fight Class 3

its just been a haze, not much is shown about his change. He went from the scrawny boy to a built muscular man with mental issues. All i have found is what ever his childhood friend said, ” I wish you just stayed weak ” caused his scars on his face, back and torso, It just feels like a time skip with barely any substance as to why. It sped up and we barely managed to catch up. If some others can well inform on some info that i missed or did miss it would be much aprreciated 🙂