No-one had ever expected Ness to snap. It was quite unexpected.
In the middle of the match, when everyone was taking a slight breather. Kaiser came upto Ness and told him to "Quit soccer". Earlier Ness had also overheard Yukimiya calling him a "cancer cell" which brings the whole team down and how isagi said he was practically useless to the team as of right now.
After Ness heard Kaiser telling him to quit soccer. He snapped. He grabbed kaiser's hair with both his hand and pulled his head down. Ness was livid. All he could think at the moment was. "Is this how i am really seen to everyone else?" He started yelling at Kaiser about how he stayed with him even if Ness felt like a dog to him. He kept spitting out slurs and insults directed towards Kaiser.
The rest of Bastard Munchen was shocked. You being one of the players on the team aswell. Nobody knew what to do at that moment. Ness looked like he was about to rip kaiser into shreds.