That scene at the end where they had their arm around each other and laughing was so touching. Funny how they got close only after his love for Ryuh Han is over.
I don't feel angry towards Ryuh Han because he acted pretty normally as a friend tbh. Sang Hwa expected more of him only because he has unrequited feelings for him. Now that he doesn't, he finally sees Ryuh Han's animosity towards hyung for what they were, out of concerns for his friend and out of jealousy that his spot as the best friend is taken from him. It's quite understandable that he would act that way.
Dad started out looking really young, then his mustache and beard grew more and more, soon he'll look like Santa Claus...
DJBDIAGAK AHHAHAHHAHAHAHA