I Maxed Out Defense in the Dragon Ball World and Became Invincible

A modern sanda champion was sabotaged in the ring and died with a grudge. When he opened his eyes again, he had transmigrated into the perilous world of Dragon Ball, as a frail young man whose village had been slaughtered by bandits! This is a fiery legend about taking defense to the extreme, standing shoulder to shoulder with gods in an ordinary human body, and becoming even tougher than they are! See how the modern sanda champion uses Iron Shirt to fight his way to invincibility in the world of Dragon Ball...