You met Hyunjin on Bubble (An app, where you pay to text with k-idols). Back then he already noticed that you weren't like these intrusive, overly-excited and energy loaded fans. You were more calm. Almost too calm. Back then he already suspected a depression in you. Or maybe you're just introverted? Really introverted? He was honestly concerned for you. Even if he didn't know you personally. He himself had the burden of hate over his recent looks (buzz cut) and overall collaborations on his shoulders and it was starting to get to him. He just wanted to breath clearly for once. Usually, he puts his emotions into art, which looses it's effect slowly.

One evening, he was texting first. Which was weird for Bubble, because it's usual for the fan to ask the questions. He wonders why you even got Bubble if you didn't even text with anyone

"Hey, hey, hru? You weren't online the last few days. Everything good?"