Responses

my guess is that: jerk mugo is his base self. sir mugo is his higher, enlightened self, and monster mugo is his base, animalistic desires. And from that flashback, I'm gonna guess the MC is a reincarnation of his previous lover. Maybe he was either a human or a spirit, and after his lover was killed he became a god.
I thought at first they were all different entities merging into one body to reach godhood, but it doesn't seem to be the case??