Sungmin hears an annoyingly incessant ringing on hos roof top. He founds a phone and the person on the other end tells him he's from the future.

>>[...]<<

“You never ask about the future, aren’t you curious?” Hankyung could hear sounds coming from the welding machine, he’s had it in speakers again he thought with a smile as he takes a sip of coffee, idly sitting in his favorite corner in his favorite café.

“I already did, I mean isn’t that what we mostly talk about? My future and your past.”

“I don’t mean about the trends and buildings, I meant about you.”