i think both are so right (,_,) painful moments await us for sure…
Most definitely I hope Seo An with his own experience with trauma and going to therapy gives him the insight to encourage Woowon. He is being very loving and gentle, and already sees that Woowon isn't recovered like he claims he is. Now all Seo An needs to do is put together that it's less physical healing needed and more mental.
Of course all of that only matters if Woowon takes Seo An to heart and listens, because therapy only works if the person wants and is willing to recieve help. And with Woowon's history he shies away from help.
In the dream, Do you think the person woowon wanted to go over to that his dad refused to let him go to was Seo an? Like his dad represents this nightmare that refuses to let him find peace which is represented by Seo an? Because it was obviously a man in a dress shirt he wanted to go too.
Or if I really feel like reaching, do you think this symbolizes that if woowon doesn't escape(heal) from this trauma(represented by his dad) that he won't get to his peace, his happiness, his future (represented by the man in the dress shirt/possibly Seo An). And his dad grabbing him represents how he feels like he can't escape despite his desperate wish too. How he is shown as a child because his inner kid is being held hostage by the trauma left by his father.
╮(￣▽￣)╭ oh the possibilities.