The imagination of a child is not just a form of expression, but a form of escape. This escape might be killing him. As a child, your mind can take you to wondrous places and experiences. But Jason's imagination is affecting the lives of others, and even hurting them. The sandpit draws him close, making young Jason infatuated with spending time in it, little does he know that his mind has the power to change his the people around him while in it, putting the ones he cares about in harm's way.
Jason was just feeling okay. He no longer felt like bashing someone's skull in just because they annoyed him just a little too long. Then he found a kid with glowing green eyes that was freezing to the touch.
Honestly, he didn't know what he was doing when he took them in. But God be damned if anyone thinks they're just going to take his baby and not see the end of a glowing hot gun barrel.
(This is being copied over from my ao3 account, hope you enjoy it!)