" Just show them why you are called the protagonist of this world! "
Unlike many, Zero thought that Hiro would emerge victorious. It was because he knew the power of Hiro better than anyone.
In the novel, Hiro would lose to Omar Noel in the final round. He didn't have a chance against Omar Noel despite using everything.
However, the reason why I think it will not be the same was simple. Unlike in the novel, Hiro Ernest was Rank-C - which is a lot stronger than Rank-D +. And most importantly, Omar Noel had just finished fighting with Lisanna resulting in Omar Noel exhausting his strength.
Though not much of his strength was depleted, I believe that he had used up more than 30 % of his mana. In this condition, I am more inclined to believe that Zero would win.
In the novel, Omar Noel would fight with Hiro when he was in full power unlike now. But now, I have made a situation where he can't retreat even if he wants to.