Tennis***********

From the author's point of view, I think that football skills are a kind of superpower, and this superpower is not easy or impossible to copy. So its essence is the same as the Devil Fruit in One Piece. It should be well-known. The ability of the fruit can only determine the lower limit of your ability and the upper limit of ability development. Returning to this, it should also be well-known that Yukimura's excessive use of annihilation sense leads to mental power. A disease caused by excessive consumption. So since this is a kind of superpower, judging from the current performance of the protagonist when using the power, it has similar side effects. So the protagonist's ability is also a superpower, rather than a skill that can be developed through hard work like the pirate's Six Types of Navy and Three Color Haki. If I look at it this way, everyone uses superpowers. From what standpoint does the protagonist criticize others for using their abilities? Is he too lenient? At present, the only difference between the protagonist and others that I see is that the protagonist's ability will not be restrained and he is not afraid of being targeted from the perspective of ability, while other people's abilities are easily targeted.

[Thinking] Great idea. The question is, is the protagonist's field "special"? What is the difference between domain-dependent protagonists and other specific-dependent players? The protagonist should not fall into the narrative cycle of "self-sacrifice"!