wowow this is the best theory so far it makes sense
thanks! i'm trying to analyze what has happened in the story so far
On another note, i realized how complicated it is the relationship with Heo-in and his cousin. They both slept with Hae-yol, who looks veeery similar to the dead brother.
The same cousin who accused of Heo-in for not caring for his brother death ... is sponsoring the dead guy lookalike ... and forgives him easily when Hae-yool is sleeping around, saying he will give anything he wants ...
Someone had a big unrequited crush on Heo-in brother ....
A for Heo-in, when he sleeps around he treats his sex partners like sex toy and i think for Hae-yool was no different. But his partners are into that.
I do wonder how the similarity Hae-yool has with Jaewon ( the dead brother ) played into Seo-in accepting being his sex partner.
Because when recalling his brother, his memory is no pleasant at all, it was of his brother gaslighting him saying there was no way there is actually someone who cares for him... the brother was obsessed with him and probably wanted to isolate Seo-in.
A part of me feels Seo-in already knew Yeongwoon was Hae-yool manager and was using him to get through him ...
My theory is that his brother is the one who taught sexual stuff to Seo-in and Seo-in grow up thinking it was normal.
He probably put a stop, they must kissed one last time as goodbye because brother wanted and Yeongwoon saw them.
His brother was blond but somewhere in the story he died brown hair apparently ... Or maybe it was always light brown and it just looked like blond in the chapters when they were younger ...
Brother started bullying Yeongwoon because Seo-in didn't want to fool around with him.
There must be some kinda of fight and Yeongwoon got expelled or something. Along with the debt problems ... So he run.
Maybe Seo-in must have an inkling abt the brother bullying Yeongwoon when he was away because when he went to look for him, a classmate said he had no right ... Or maybe he didn't add up and thought it had to do with him instead . Who knows.
Soo i guess the brother died after Yeongwoon left... Heo-in mother said they have eaten together when they were in college, probably around that time, maybe Heo-in and his brother fought, brother got in an accident and died.
Part of his family blames Heo-in, the other part takes his side.