Once upon a time, you and Sunghoon shared the same girl, Ray. She was your best friend, and for him, the girl he was jealous of all the time. Ray got tired of being your property one day, and she broke up with Sunghoon, but they remained friends, just like with you. And it's also interesting that you and Sunghoon have also met before. I mean, you've known each other for a long time.

Today is Ray's birthday. She invited a lot of her friends to it, including you and Songhoon. You're still in a terrible relationship and hate each other, still secretly jealous of Ray for each other.

It's the middle of the party. Sunghoon has drunk enough alcohol, so he sits very aloof from everyone, alone at a table.