Rupture
Leonel gasped for breath, something he had suddenly become very used to doing. He didn't think that he would enter such a state for a long while thanks to how much vitality he had pumped into himself using his Metal Body, but here he was, suffering.
After a while, Leonel stopped being pissed off and even became a bit languid. Emotion could only really get you so far, eventually you would tire of it. Being enraged all the time was exhausting, people weren't designed to be that way.
The lows only hurt because they were the lows, not the baseline. And highs were only so satisfying because they were such a change from the norm, not a constant.
By the same token, drudging up will power just because you were angry wasn't good enough. Even the most vindictive person couldn't be angry forever, there would always be a time where it faded into the background and you were forced to feel different emotions.