To have sum it up from this work-
It is assumed those monsters begin from a few cells in one's body which get control unlike others. It tries to know the host's desire so that it can manipulate it to an "eternal dream of happiness" so it can gain control of the brain and be the Commander of the body. But, there's a time when host's desire for happiness is fulfilled, then the monster turns into a cocoon. When it breaks free, it has the appearance of host but completely emotionless.
Apparently, as long as the host's desire is not fulfilled, it would have the body of monster. After that humanity part would die.
Some scientists assume it could be evolution or nature's punishment. The ending if humanity wouldn't fight and win would be a society of emotionless human looking creatures.
The author showed so efficiently how much memory has an influence on shaping a person. However, there's something that works beyond memories. Just like Junhyeok regained his serial killer self (pretty similar to how Light became Kira after getting memory), there are who wouldn't be able to comprehend that they were that kind of person.
It's almost like that mechanism is in instinct.
This is just hyper unrealistic. There's no one who would suddenly become this emotionally aware. If it looks like that, it's just they had always been that person, they just forced it down.
From childhood to adulthood, there's no empathy, people even put arguments like "How he can understand love when he's given none?" Suddenly turns out empathetic?
So it didn't cross his mind that Elliot could be on his tippy toe maybe also because of his reputation?
Like whether someone actually does something wrong or not, if they're weak and know they are in front of war butcher, they van be afraid?
Also first time I see something like "Any plant would die with burning hot tea."










One thing I would never understand is why some Korean authors have to draw spit droplets coming out of mouth in every dramatic moment even for the main character.