Responses
Your theory makes so sm sense, because he could have done all those deeds instinctively even without knowing why he needs to do it. It would make totally sense considering how he remembered everything after saying "again". It's so epic omg
It kind of reminds me of that Black Mirror episode with the “love simulator” except here they have multiple endings, but they always choose (at least Guwon) to die.
It makes sense that Teach had headaches and difficulties to remember at the beginning of the story ! Maybe that’s why Guwon killed Teach’s father. Because in one of the loops, he didn’t kill him and Teach ended up dying because of that. Same with all the debatable choices Guwon has taken since now.