
What about the first preview when guwon is walking into the building where teach is his footprints go from big to small so he can make his size change. I think he really is an experimental subject cuz he doesn't remember his childhood cuz he didn't have a childhood I think he's just saying he doesn't remember

Damn you compiled it nicely! You should check out the Sisyphus story.. Remember Guwon was talking about this rock and protecting the village.... For sure it's connected. In the story of Sisyphus the cunning king is tasked with rolling the rock up the hill in the underworld. But yea I am so excited for the plot(⌒▽⌒)
Okay I need to arrange my thoughts and theories on this. I just reread it all again to gather proof and find anything of notice so here they are: (they'll be a lot, so scroll past if you don't want lengthy comments TuT)
1) the first thing that caught my attention is the time teach attacked Guwon when he was sleeping, towering over him and holding a knife down his way. According to their positions, it's either Guwon was caught off guard enough to land beneath a weaker and injured person, or he willingly allowed that position for god knows why. But also,,, where did the knife come from? The earlier panels showed how he just arrived to that house, sat on the sofa then fell asleep. Why was there a knife? (My mind keeps providing the thought that Guwon was there with the knife and allowed this as a test but idk. Was he checking if teach would hurt him?)
2)Gunwon's eyes are the same as maggots, silver.
3) Guwon's tattoos are a little odd. Like aside from the blackout sleeves, you can see the neck stitching as well as that same pattern on his ankles. His wrists don't have them, but his arms are littered with stab/slash wounds, and so is his eye. Arguably these are not wounds you get from maggots, they're like walking dolls, they can't handle knives, and those definitely don't look like haphazard wounds from fighting a doll (you think other humans hurt him?). If you also go to the community dinner chapter, the angry girl Gyeongha mentioned how people would cut off maggots' heads to finally stop them from moving.
4) going by 2 and 3, it'd point that Guwon is a maggot, and idk how his limbs were stitched back up to his body if those stitching tattoos are real stitch scars (was he an experiment? Were they trying to figure out maggot mortality and behavior?), but if we believe that theory it'd make sense why he doesn't remember his past, and why he behaves like a child. Which brings us to 5
5) The only people who truly get along with Guwon are the kids. It's said kids can sense someone's bad/good intentions and have good base instincts (and we all know Guwon actually means well, even if he's a maggot. He's not scary because of what he does, but what he is) and perhaps because he also has the mentality of one that they all get along well. Perhaps the rest of the town actually know that Guwon isn't normal, that he's undead, and that's why they're all afraid of him. He never actually did anything warranting fear, he was even kind enough to mc first meeting when he didn't have to be. This explains why he cried like a child when he thought MC feared him, saying "are you afraid of me too?" Which means everyone else is. The reason he only visits mc's house is because mc is the only one who treats him normally enough to "backtalk and challenge him" like how Guwon put it as if he's a normal person worthy of backtalk without fear.
6)I think the sex was a dream. If you notice, mc's pants would suddenly disappear then reappear, which makes no sense. But also I do think he kissed Guwon for real. I don't think Guwon knows innuendos, which was proven in the "wanna touch my muscles?" Scene where he had no idea he was coming onto mc. Idk if he knows what sex is or what it feels like to be touched intimately, if he lost his memory and is treated with fear and avoidance, so he probably doesn't realize what's happening lol. He had no qualms about "mouth to mouth breathing" in early chapters so he might truly not even realize the meaning behind mc's kiss if mc truly kissed him, which is why he brushed it off next day.
Anyway, food for the brain.