Zick didn't like the current Aeiron. This feeling only went up to dislike, it didn't get to the level of loathing or hatred.
Zick had dropped the novel 'the hero of velveric fights the demon lord' after reading a few chapters when he first started reading it. He didn't like the protagonist at all.
Aeiron didn't have either courage or determination at the start of the novel. He was easily pushed here and there by others, he didn't resist even though he knew that they were using him.
But after reading the comments in the novel, where it said that Aeiron develops, Zick continued reading it patiently.
The student taking advantage of Aeiron went up a level and started harassing him. These events were very important for the character growth of the person named Aeiron.