"XX Middle School," said Ha-jun. "Out in Jung-gu. What about you?"
"OO Middle. Songpa-gu," Yo-han replied. On a whim, he took out his phone. "Add me on Kakao?"
"Sure," said Ha-jun. A QR code and an emoji later, the two of them were friends. "Message me if you get a callback."
"Same to you," said Yo-han. "Thanks for the meal."
"Yeah, yeah." Ha-jun took up his tray and dumped the remnants on it into the trash. The two of them left, making small talk on their way to the subway station, before parting ways.