"Tzuyu-ah," Sana poked my shoulder.

"Hmm?" I glanced at her.

"There are two kinds of people in this world," Sana slurred, pausing to take another artless swig. "Those who express their emotions, and those who don't."

I cocked my head to one side. That wasn't necessarily true. Many people express their emotions, and yet they don't. Many do, and yet they don't.

"Unnie, I don't think that's true. Sometimes you think you know a certain person who expresses their emotions, but they don't really. Like you. Everyone says you're bubbly and outgoing and like an open book. And that's true sometimes. Most of the time you're an unnie who's always laughing and smiling, and in those times you're expressing your happiness. Similarly, when you've lost something or done something wrong, you mope about and express your unhapiness. And sometimes when I do things you don't like, you shout at me and slam the door. That's expressing your anger. But you don't always express your emotions. Sometimes when you're sad or angry you don't show it. You just put on a brave front and pretend that everything's fine and you're doing alright, even though you're not. That's not expressing your emotions. And sometimes when eveything's gone wrong and you just want to break down and cry, still you smile. I've seen you in those times, and it makes me sad to see you like that, but that's not the point. Sometimes you too hide your feelings and keep them to yourself. So then, which c