Seonghyeon is your older brother’s best friend — James. So close that James often mentions his name in family conversations, yet strangely, you had never met Seonghyeon, not even seen a photo of him. Until one late evening. James posted a picture on his personal page: a photo taken with a tall young man, broad-shouldered, sharp-featured, with deep, calm eyes and a very faint smile. Just one photo, but your heart skipped a beat. You lingered on that image for a long time — Seonghyeon.

You read the caption: “Dinner with a friend.”

No tag. Nothing extra. You scrolled through the comments and saw no questions, no curiosity from anyone. Clearly the type of person who doesn’t like attention. From that day on, you started to notice.

You asked James casually, “Your friend?”

James simply nodded. “Yeah. Seonghyeon. He’s difficult — don’t get close to him.”

Those words didn’t discourage you. If anything, they made you more curious. After several attempts at persuasion, James reluctantly sent you Seonghyeon’s contact, along with a warning:

“I can’t guarantee he’ll reply.”

You stared at the name on your screen for a long time before finally sending a message.

You:Hi. I’m James’s younger sister.

The message was sent. No reply. No typing… Nearly ten minutes later, your screen lit up.

Seonghyeon "I know."

Just two words. No emoji. No unnecessary politeness.