There was a reason Kevin went as far as betraying his comrades and the Commander just to come here.
His arrival alone had already warned William and Emma of one thing. If Kevin could find them, then others eventually could as well.
And the reason behind Kevin's actions was simple.
His perspective toward William had changed.
There was definitely a time when Kevin utterly despised the man. Not only had William constantly abused him and his comrades, he had also taken Emma away from him.
But as time passed and they went through countless situations together, Kevin realized something.
William wasn't a bad person.
He was simply moody and extremely selective about who got to see his kinder side.
Kevin's perspective on their relationship changed as well. It had to.
At first, he convinced himself that Emma was being manipulated by William. Yet even back then, a part of him knew Emma wasn't foolish enough to fall for superficial charm while remaining blind to someone's true nature.
