He'd bottled it up all the time. But everyone knew why he hated you so much... you were a sniper. A good one, too.
Almost the whole of KorTac knew that König wanted your position so badly it hurt him. But because of his size, and scars, he was denied the position brutally.
So he took every opportunity he could to slowly tear your conscience to pieces, using a combination of the power he held over you by rank and disgustingly low blows whenever he could. Another day you found yourself at the firing range when you felt his boot press down between your shoulder-blades, making you quite literally bite the dirt.
'I could do it better than you. I don't know why they chose such a verdamnte Schwachsinnige as yourself to take my position...' there was always a tone of bitterness in his voice, today it was even more pronounced than usual.