>>spoilers for anyone else seeing this<<
Ofc! It ends with him winning a Grammy (obviously) and him dating Miley, the American model/singer which was very "?" In my opinion since they don't really have any chemistry. That was one of the reasons I wish they change the ending to make it so they have something.
The other is basically our mc was rlly excited for his future acting roles but was anxious and worried about how his persona would affect his future especially now that he's in a relationship and so he decided try and tell Miley the truth about his real self and how he actually acts, but Miley didn't believe him and thought he was joking. It's an open ending with Woojin never escaping his nonchalant genius persona, which is so ... Depressing and lackluster to me.

I hope the author/artist of this changes the ending to something that isnt so lackluster and disappointing as the original but idk sob sob ╥﹏╥