I've always considered this to be a great game. But the Brawler mini game and the fighting system behind it, is incredibly frustrating and frankly a bit silly. Because a lot of time it lags and doesn't work as it should, and also if you're not that good at games like that, it completely conflicts with the MC everytime you lose, because he is supposed to start the game as a pretty good fighter. So when you have to fight against Chad and Dawes, and they easily beat the MC to a pulp, without him landing a single blow, it just makes a complete nonsense of his claims of being decent at Martial Arts.
Most of the time you can just avoid Brawler, but if you do that, it means those fights in the game are almost impossible to win (particularly if you're already struggling with an imperfect and overly complex fighting system).
In my opinion, the Dev needs to revamp the fighting system, to make sure it always works and isn't so complicated, or remove it altogether from the active parts of the game, where the player has no choice but to fight. Why would the MC go around telling everybody in the game that he can handle himself, when everytime he actually fights, he has no chance of winning? This completely defeats the immersion, in these parts of the game.