I think there are 4 personalities and the real "monster" is not the always hungry mugo

Ooh? New theory? I'm keeping it in mind while reading.

Yea I've been thinking about this especially after chapter 13 and 14
Jerk mugo is always fighting with one of the personalities (in chapter 13)
And in chapter 14 kid mugo said he made a promise with one of the personalities to stay in the shadows instead of him, which doesn't seem like a promise he made with the others.
Plus all those flashbacks Jaehon keeps having are just weire