Perhaps Zin's reasons for fighting were not the same as everyone else's. Unlike many, he didn't care what others thought of him, or whether they approved of his actions or not.
All of that was irrelevant to Zin, since he always had his own goals, and this Grim Court was no exception.
However, Zin failed to take one simple thing into account: sometimes other people's actions, their thoughts, and intentions directly affected your life and your goals.
No one in the arena could doubt Zin's victory. For him, that wouldn't have meant much. But… it was an indirect indication of how far victory, and thus his goal, was from him.
Strange as it may seem, but only now, when half the spectators had switched sides, and the black blade was plunged into his shoulder, did Zin realize that this fight was important.
He had to win, and only then would he be able to achieve his goal, there was no other way.
