The Provoked Beast

Seeing that Kuys had gone silent, Ban became worried that he might suspect him of being a member of a Dark Guild. 

After all, he also knew that reaching the F-Apprentice Rank within a week was a terrifying feat. The only reason he revealed it now was that Ban was also afraid that if Kuys found out about it from the others, and not from Ban's own mouth, he might get mad and suspect him again for being part of the Dark Guild and that the battle from earlier was only a ploy.

At this moment, Ban was only overthinking things. He has already grown attached to Kuys and the reason he was being paranoid was mostly due to the fact that Kuys' might abandon him and he might experience the same feeling when he was separated by his gramps before.

Contrary to Ban's thoughts, Kuys actually did not suspect him a bit about being a Dark Guild member. After all, for someone like him, spotting such people with their 'aura' was quite easy for someone like him.