Isaak knew very well that Acacia's smile probably had a sinister message to it, they were both Slytherins and he knew about who she really was. despite being apart of the same house, Isaak found her manipulative personality unpleasant. he may have somewhat of a mean streak when it came to muggleborns and Hufflepuffs, but when he becomes friends with someone, he will stand by them as a loyal friend. Isaak's youthful arrogance and foolishness wanted to make a snide remark that would question her skills as a proper witch, but even though he was a second year he knew that making insults at a potentially dangerous witch or wizard who was older than you and more advanced in their magical learning, was not a smart thing to do. so he just allowed the subject to changed, and was now pondering how the school year would turn out with someone like Acacia being Slytherin house.

He listened to her say how she liked Defense Against The Dark Arts better than charms, and Isaak almost burst out laughing but he kept himself from doing that. it was quite clear to him that Acacia preferred the actual dark arts over the type of magic that was used to fight against it. he guessed that she only liked the class just because she got to learn more about what type of curses there were.

he looked at Willow, noticing her nervous demeanor and asked, "are you alright? you seem to be as nervous as a first year before the sorting ceremony."