This is a Prince of Tennis fanfic, original male protagonist, please note, no cp
From a young age, no matter what he does, Onizaki Yuzuma has to be told by others that he has no "talent". The reason is that he is just an ordinary person who does not believe in fate. He wants to break the barrier formed by his talent, but he loses miserably every time.
But it's not a big deal. If you lose, fight again, and you will become more courageous with every defeat. Tennis is a sport where you are always chasing your opponent.
"So this is why Onizaki-kun is called the 'Patron Saint of Tatekai Dai'?"
"Yeah, try not to prolong the game with him, otherwise you will see what Tachibana's last line of defense is."
This is not a cool novel. The male protagonist is a real ordinary person. If you don't mind, don't read it.
It will give Li Hai a big win, but I haven't watched The Prince of Tennis for many years, so don't be surprised if many details are not so accurate.
Update by chance
Intention: hard work and struggle