That's a great analysis, and to add, because Dohun has only lived through unstable relationships and emotions, destiny appeals to him as it seems set in stone and secure, even if said destiny could be his demise or painful.
yuwon being the first person to protect him by pure instinct (which develops dohuns coping mechanism #2) also seems to validate his view on destiny being inevitable. he wanted to have someone by his side no matter what and he clung to the first person who truly shows him "security" even if only for a brief moment
I agree. It feels like Dohun places all his eggs in one basket and that basket just happened to be Yu-won being at the right place, right time, right action. Yu-won didn't really think much about it and even regretted it, but for Dohun, it meant everything
I think it has significance that it had to be yuwon. their misfortunes are similar in a way. both boys with no one on their side but themselves. I think thats why dohun was able to connect so quickly to yuwon too. not only because of yuwons single action but also because dohun saw a bit of that misfortune in yuwon that he wanted to share. he probably wasn't able to recognize all that as a lil boy though
Dohuns mom mental illness made her incapable of really loving dohun, of giving him genuine secure affection. it seemed like she was devastated to give him away, but her unstable mental health made that she could never be happy even with him around. because of her Dohun felt like a burden. he wanted to relieve her sadness, even if all her anger was directed at him, it would make him feel like he could do something for her. Her neglectful abuse, hot and cold attitude made dohun unable to properly develop his emotional capacities, but still want to take away her pain, like every child wants to support their parent. I also think that's part of why he never tried to run away from his father's home, it was his mom who brought him there.
So when yuwon blames dohun it's also way for dohun to take all the pain he couldn't take from his mother. it's almost as if he can make it up to her after she abandoned him. After years of abuse and isolation he's numb to all things, he believes that this is what he's meant to do. This is why he suffered. To relieve his loved one's pain.
when I see it like this I can understand why he clings so hard to "destiny". he is enchanted by the idea that everyone has a fate, and his fate is to his love. someone who he will be able to love and be loved back. he is able to endure all these things because he believes in that idea. it's his way of coping.