Both are mentally deranged
Yuwon rewired his memories as a coping mechanism
Dohun ig was bordline psychopath since birth and his family's constant abuse made it worse.... In his eyes only yuwon could understand him truly, they are destined to be together... He sees yuwon as a fawn who needs to be protected from predators...
Dohun never knew how to love someone thats him isolating, gaslighting, manipulating yuwon was way of showing his twisted love...
Praying jakpil to give answers for everything

rereading it from the beginning after this plot twist makes you see how yuwon basically lived a fantasy... i think he might even have been the one who killed the bullies and duhoon took the blame instead, but I don't know. very sick and twisted jakpil.
i'm curious to know why duhoon went even crazier after those 13 years apart! could it be that seeing yuwon still living in denial pushed him to his breaking point? he became so violent... anyway, I feel like duhoon takes advantage of yuwon's fragile psyche. he knows yuwon remembers his adolescence all distorted and he takes advantage of that, or he doesn't try to clarify things.
it's annoying that after 13 years he doesn't try to explain things clearly, he just says superficially, "oh yeah, i'm the illegitimate son of a chaebol, etc, let's fuck."
god bless toxic yaoi !!!!!