He is smart. She is dumb. He is calm. She tends to over-react over little things. He is poor. She is rich.

In a love story, there is two main people included. That is the two protagonist lovers. What if the other character isn't antagonist nor protagonist? How would she know if she was just.. a friend. Will she finally able to know what her role to the protagonist's life? Or she'll just end-up knowing that she's just another supporting role in a love stor