Key: Daquann1
Character: Wushei
Skill(or transformation): Sharingan T7
How well do you know the source material?(obviously not relevant if it's a transformation): Well
Reasoning:
It's likely the end while everyone is afraid to attack, and fight for what they want it's left a bad taste in his mouth. Everyone is actively being passive and waiting for some cheap tricks to win a fight. While Wushei had respect for everyone even Qi it was time for him to disassociate himself from that alliance there was nothing  to gain from being under anyone anymore, and especially those afraid to make a move.

Now; he's fighting for himself and what he's lost in the world weather he's prepared to fight or not he's actively searching or Tath to battle them. If a group of deciding to ignore the issue Wushei will handle it himself.

What is the moment:
There was a meeting that people join talking about their next move; while Qi was trying his best it seems everyone's focus has shifted towards Golden Soul. They've ignored the fact that someone powerful was taken away from them or they really didn't care. It was at that moment Wushei decided he'd fight for himself and to keep push for what Chla wanted.

If there was going to be a kingless land the mighty needed to fall, not be allowed to rest while people plan their next attack. Either he'd come out victorious or join his companions in whatever happens after death, but he refused to be stuck sitting around.