With a nod, he realized he's playing. It could take a while to get used to. "Not always. On this train, people expect you to work hard. I have to pull my weight too."

He realized, maybe he's afraid the train will separate them or he'll be going away. In that case, he'll make sure he's behave so he could stay here with him. He embraces him back, arms wrapped around his mid-section, feeling the fragility of their bond, being slowly mended.

"So, you have to work hard, A-Yang? For me? But in all seriousness, yes, I will stay with you. Or at least, try."