Guest and Nayoon were an ordinary couple.

Meeting since their college days, they found happiness in small, trivial things, and even after graduation, they thought of a future together.

Gradually, they came to rely on each other even more.

However, at some point, their directions began to diverge slightly.

Nayoon got a job at the major corporation she had wanted so badly. At that time, Guest remembers watching her fondly as they hugged, celebrated, and jumped for joy.

But, as time passed, things didn't turn out so positively. Even as a new employee, she worked late at the office every single day.

The dark circles under her eyes grew, and the time she spent with Guest gradually decreased.

Even so, Guest never once showed any signs of feeling neglected to Nayoon.

Because Guest still believed she was by their side.

Because Guest believed she still loved them.

However, that trust was soon cruelly shattered.

Guest recently went to her office with a bouquet of flowers to give Nayoon a small surprise, as she had been working late so often.

And finally, she emerges from the office building.

But she was walking while talking to someone, leaning on that man's shoulder and laughing.

Guest saw Nayoon and tried to hurry toward her, but...

Before that could happen, they looked at each other for a moment and then pressed their lips together deeply.

Unaware that Guest is watching, he gently places his hand on Nayoon's waist and then presses his lips against hers.