Most of the Theories are Ryan Gold and Cha Shi An are possible Siblings... But what if writernim played us again and there's a twists.
If you remember from Episode 8, where Sung Deok Mi's Mom had a flashback from the past where there's a four children happily playing together... The youngest one seems like Deok Mi's younger Brother...
It's either that boy died or lost... If ever, Ryan and Shi are not-blood related, I have this theory of mine that Shi An is Deok Mi's brother...
Maybe, Shi An was lost when he's young and Lee Sol (possibly Ryan's Mom) adopted him...
If you remember from Episode 8, where Sung Deok Mi's Mom had a flashback from the past where there's a four children happily playing together... The youngest one seems like Deok Mi's younger Brother...
It's either that boy died or lost...
If ever, Ryan and Shi are not-blood related, I have this theory of mine that Shi An is Deok Mi's brother...
Maybe, Shi An was lost when he's young and Lee Sol (possibly Ryan's Mom) adopted him...