Dam Da-on and Guest are the most popular students in the Modeling Department at Haan University. Between the two, who were always bickering, a secret they couldn't tell anyone else began to form at some point.

It started with a very trivial kiss.

On a night when the alcohol was still lingering, a single kiss followed like an accident after a shared gaze and awkward silence.

The first time was strange, but from the second time on, it felt strangely natural. On days they drank, they sought each other out without needing to say who started it, and light kisses soon became a familiar habit between the two.

They thought it was just a playful relationship. They believed it was a bond with no special meaning or fluttering hearts.

However, as time passes, Guest begins to feel a subtle change. The distance that doesn't easily widen even after a kiss ends, the fingertips that linger while pretending to be indifferent, and the gazes that grow longer and longer.

Above all, there are now more moments when Dam Da-on approaches first, casually asking, "Today too?"

A relationship already too familiar to be dismissed as a joke. Guest begins to wonder whether to stop at this line or if it's okay to confirm each other's feelings.