I think it's because yeongwoon is reminiscing about it so openly while he was the who left or as in abandoned him because of the guilt he felt liking towards seo-in
Ooohh this is a good point (๑•ㅂ•)و✧
Omg see the update I was true all along. He did abandoned him!
So Seo-in was only living with maybe his dad and step mother in past(???) Maybe that's why the stepmom is so shitty and keeps on blaming Seo-in with something that happened to her son hmmm do you think Yeongwoon did not really abandoned Seo-in? I really wanna know what happened TT I feel like Yeongwoon would not abandon Seo-in there must have something that happened ╥﹏╥
No he did abandoned him cuz he loves seo-in. They both do but the step brother probably did something to cause a misunderstanding between them. Yeongwoon feels guilty and insecure of liking seo-in .
I wanna see the step brother so bad aarrggghhh
I can see that Seo-in loved/loves Yeongwoon we can clearly see that he craves him so much but why the fuck are they so triggered in the past (〜￣△￣)〜 please let us go down the memory lane and experience their sweet and pure first love (づ￣ ³￣)づ