You know the author, at first I thought that the Hero would win Agito, but after your arguments and comparisons, he has little chance, 0 experience in grappling and fighting in general? This is an instant loss.
Thunder breathing will strain his body for a long use? Cmon, Zenitsu in original use it to fight demon and it doesn’t strain him at all with his weak body.. your mc have much more strong body than zenitsu.. 😓
Every protagonist wants to be a little short and a little thin for everyone not to think he is strong or to put down his guard, put more muscles in him like I'm agitated there
He only need more time to adjust his body to the breathing style... If his body become stronger and able to handle the breathing style movement, he would have a big advantage..