What can i say except that i have re-read this manga about 8 times. Due to the amount of chapters it is a great read, a lot of story and a lot of character development, at times you want them to win you want them to get up and continue, and you feel like you're there watching it live.
At the beginning like all great manga the art was good but had some flaws however over the course of the manga the art has changed slightly but enough to make it a lot better to read. It isn't one of the manga where the main character is OP from the start which is why this anime is great it slowly builds up the main character making each fight better as you just want him to win.
It is filled with comedy and it also has its serious bits, and each fight you just get more excited for whats to come.
Overall i gave this a 10 out of 10, this is because every series has its flaws even if they are slight, but this manga from my perspective was great with minor flaws, this manga is enjoyable even if you don't like boxing however at first it slowly progresses as it would realistically based on the time between fights, however this is what makes the series better as it hypes up each of the main fights for the main character and other characters in the series.