Maybe the uke died in the past or murdered. I remembered him saying they took what's his, ...

Maybe the uke died in the past or murdered. I remembered him saying they took what's his, then maybe went mad and went on a killing spree. As a result, He's punished of being an incomplete god ( split personalities), being confined in the mansion, and eating sacrifices. Maybe this cursed will stop if he will to meet his omega again and his personality will become whole/one again. He said it's been hundreds of years since his last rut so, I assumed Jaheon is the reincarnation of his omega. He may not remember his face, but his body definitely recognizes his omega. I remember the old mugo said their barrier or something is weakening, and he has some memories of the other personality, so maybe they're starting to become one.