Susa made his intentions clear and he did not take no for an answer. He needed to know if they were capable of going on this journey, regardless of how dangerous it truly was but he had to know.
He was just too curious about their inherent potential and this was the only way he knew how to find out what they were all about. Their appearances didn't tell him much but he did notice that amongst all the other students, they were the only two who had highlights in their hair similar to him.
That was something he never understood and even Gakusha couldn't give him an answer as to the strange genetic trait that made it that way.
He sighed before disappearing from where he had stood, appearing in between Sakura and Hakai which forced them to jump away from him. Susa's fist carved itself into the ground beneath, creating a thunderous explosion that showcased his destructive power in a way he could not display in the school.