Hear Me Out

So hear me out what if the mc’s dad turned into one of the zombies and was trying to kill the mc, the whole time the mc confused the zombified version of his dad with a robber, and that’s why guwon killed the mc’s dad, this would also explain why guwon says he did not kill the mc’s dad, cause at the point the mc dad was killed he was no longer human, or at least I feel that’s how guwon sees it.