The twist is great , this has potential.
I assume GM must have kept his identity a secret even to his supporters but its also weird how they are so sure that mc isnt GM.
VERY interesting. Halfway through I was thinking, "It'd be really funny if he just wasn't Golden Man, and it was a huge misunderstanding." Sure enough, this is a mystery.
Definitely keeping up with this one, feels like I struck gold. (Heh)
I'm speculating, GM was sick to fight and want to stop, so while fight the strongest villain he wipe his memories and switch places, or also they agree beforehand.