You don't even have to do it. I don't make you do anything as GM short of follow the rules. If you want to walk up to our sensei and kick his nuts in for no reason then you can do so. Likewise Kuro isn't seeing anything. He could be completely wrong. Their sensei could be planning to walk around the park and lecture them. Kuro is a pessimist. He always prepares for the absolute worst which is why he carries around his sword everywhere he can or at the least a kunai and it is the primary reason he is leaning towards a jack of all trades master of none style of fighting.