Its called writing!! He doesn't hate the character, but wants to show something through the character. In this case this is him showing Ippo in the most trying part of his life and how this can affect a boxer.
Just stop reading the manga you fuckin loser, and learn some proper English, Jesus Christ. What kinda pseudo-masochistic shit are these Ippo fans on, bitching about something they don't to watch but still do. Get a fucking life, all of you.
can the autor just let ippo die or somthing ! come on he is suffering as Hell so just end the Manga if you just drag it down more and more chapter per chapter its disgusting how you can loose yourself after more than 20 years that manga is ongoing. How much can you HATE your OWN MC to do that to your and his life.