Kai was the first to wake up.
The sound of rustling leaves instantly woke him up. Alert but feigning sleep, he listened as some beast sniffed their 'camp.' He could hear 3 people breathing nearby, so he figured one of them was a keeper.
Even though there shouldn't be any reason for them to fight, as the SS-Rank historia would require all the remaining teams to band together, Kai knew that's not how this would work out. They were people, and people were selfish and liked to try and decide each other's fate.
If his team was taken out, then suddenly the 6th spot was wide open. Right now, they technically held the 6th place, but anyone who killed the SS-Rank historia would pass them. Of course, killing such a thing would prove impossible.
Killing 2 kids in their sleep should be easy.