Kai was back at the train like all the other times. He tried to listen to the conversation happening in the cabin next to his, but didn't learn anything new, though he was certain the people in the train cabin had to be part of the invasion.
The journey to Lunengard was the same, and soon Nila parted ways. They went straight to Brainheart. There, Jane talked with the guards and Finley to get Kai to stay with her before the classes truly started.
Things started changing the day after Kai completed Luke's task, which was take care of Feathers and a cat. Kai didn't try to spy the cloaked figure in the forest or do anything that might cause them to kill him way before the time that was supposed to happen.
Now, the academy was not closed like it was after the killing and after Luke disappeared, so Kai could leave at any time he wanted. Before, there was no reason to leave. He was just too weak and couldn't do anything outside.