Responses

I could see it being something like he had to kill everyone to complete the seal or some magic mumbo-jumbo like that and he chose to act like he was "betraying" them because he thought it was kinder then telling everyone God told him they all had to die.
Either way, he definitely didn't just murder everyone for funsies.
this is the reason we eat them... lmao but ngl i think someone controlled miltier when they almost sealing the dungeon like what those fishes did that's why he killed the other heroes...