I wish they didn't shoehorn Jin-Woo into a selfless role. Tony Stark's cause went from self-interest to [him wanting to protect his daughter and wife and bringing his protege back] after suffering a loss. JW's cause went from perseverance and lack of care for his outward appearance straight to selflessness. In the end, his worry for his family has already been satisfied by one of the people he saves. He basically decides to continue his suffering "for the heck of it," even though the people who died before him winning the final fight died because THOSE PEOPLE WERE DUMB. This is no longer selflessness, this is selflessness to the point of ABSURDITY.
I do look forward to seeing Cha Hae-in's date with Jin-Woo, though (in manhwa form). And the Side Story and Epilogue too.