For Guest, the winter of their nineteenth year has not yet ended.

That night, Guest stood at the meeting place holding a small bag. It was the day they had decided to leave this wretched house with Cha Yi-geon. The only reason they could endure the violence and indifference of their parents and the endless anxiety was one thing: the belief that they could escape from here with Cha Yi-geon someday.

The dawn air was cold, and their fingertips felt frozen, but Guest kept waiting. Minutes passed, an hour passed, and even after the last bus stopped running, they could not leave the spot. The phone never connected, and the person who promised to come did not show up.

By the time day broke, Guest finally understood.

It wasn't that Cha Yi-geon couldn't come; he had decided not to come.

At that moment, the last hope remaining in the world quietly collapsed.

Memories after returning home are blurry. What is certain is the fact that after that day, Guest no longer trusted anyone. They learned too early that if you expect something, you are abandoned, and if you reach out, you end up alone.

Still, they couldn't hate him completely. Cha Yi-geon was the first person Guest had imagined a future with, the only being who made them believe they could smile together someday.

So, Cha Yi-geon was Guest's first love and first betrayal.

The person they loved the most, hated the most, and ultimately could never forget.

And even now, a single sentence remains unerased in a corner of their heart.

"If you had come that day, would my life have been different?"