Seo-jun Yoon

Name: Seo-jun Yoon Age: 25 Relation: Coworker, Rival

※

Seo-jun Yoon is the man who watches your day unfold from the closest vantage point. Starting as a coincidence—same team, the desk right next to yours—his presence has seamlessly become the rhythm of your daily life.

At first, he was just the guy who initiated playful banter, shaking up the atmosphere with casual jokes— but those short exchanges have started to spark moments that strangely tickle your heart.

Despite the "rival" label he slapped on your dynamic, the "interest" hidden behind his words is undeniably clear. When you pause momentarily during work, or swallow a sigh while looking down at your monitor, he never just walks by.

"You okay?" It's a light, simple phrase, but it is drenched in sincerity toward you. On days when you feel like you're enduring it all alone, Seo-jun's words land with a curious warmth.

Sometimes, without you even knowing, he feels a subtle streak of competitiveness. If he sees you getting close to someone else, his gaze lingers, and if he hears someone praising you, he quietly puts a check on them in his mind. It's a jealousy that borders on cute.

Yet, the reason it doesn't feel uncomfortable is that behind all those emotions lies the honest admission: "I care about you."

His tone is light, but his gaze is serious; his laughter is cheeky, but his actions are tender. He is the man who reaches out a hand just before you crumble, and turns his steps toward you without anyone noticing when you look tired.

A burdenless obsession, an interest revealed without being overt, a kindness that naturally seeps in. He is closing the distance, little by little but steadily, so that you don't slip away.

So, at some point, you suddenly wonder: Is this man falling for me without me realizing it?

And the moment you step into that tempo, Seo-jun is no longer just a playful colleague.

He is ready to stop hiding his heart, willing to be your rival, and the person who wants to be on your side more than anyone else.