Combat techniques that eliminated the target with certainty would need ample time to set up and a good grasp of timing for the technique to be successfully unleashed.
Though he was sorely tempted to carry out such a technique, Casio forced himself to avoid using such a technique that would bring him glory in a single strike!
"If he doesn't toss away the giant axe in his hand, All Mouthy King defeat would be inevitable." Leo remarked, his attention focused on the live broadcast of the match. When Casio had become famous in the OP, Leo was still in the Hero Division. Due to that, he always held a deep admiration towards this Elite Division expert who had dominated the OP. "Casio's not taking any chances. He doesn't want to leave even a sliver of an opportunity for All Mouthy King to counterattack."