Fukusho looked at Akihiko-sensei like he was crazy. Since he mentioned chakr control then climbing these trees had something to do with their chakra. Wait it probably worked something like balancing the kunai on their fingers but it sounded a bit more complex. Fukusho knew he would have to send the chakra to the bottom of his feet which was a  bit further than sending it to his finger tip. Either way it would require him and his feet to reach the top of the tree. Fukusho put his hands together so that he could build up as much chakra as he could. The more for this exercise the better his result would be. He took his kunai n his hand and he dashed up the tree at full speed. As Fukusho climbed he could feel that he relied on the momentum of his speed to go the first three steps and then he needed his chakra to help stay on the trees. After his second step doing it the proper way his chakra propelled him off of the tree instead of hooking onto it and knocked hi away. Fukusho marked his spot and then landed gently on the ground. "Man that is hard." He said to himself.