Of course he did. How else would a ten-year old get ahold of a gun if not his big brother stupidly deciding to leave it behind? But what he snaps is simply, “Doesn’t matter. I fixed it. He’s fine, and no one’s ruining that.”

That they aren’t on Earth anymore, that Jon would probably have no way of finding them let alone reporting anything to the cops even if they did get back, that he may not even remember any of this when they wake up... none of that makes a difference to Chikai. If this guy does remember anything later, Chikai wants to make damn sure he remembers this too.