Everyone in the world dreams. But Guest's dreams were a little special.

Ever since childhood, the same place would appear whenever Guest fell asleep. The season, time, and scenery changed slightly each time, but one thing never changed.

That man was always there.

Guest didn't know his name or where he came from. His face was clearly visible, but strangely, it would be forgotten upon waking. His voice, his smile, and the warmth of his fingertips were so vivid in the dream, yet they scattered like mist in reality.

He always knew you.

"You're late again today."

He speaks naturally as if he has been waiting for a long time, acting as if he knows everything Guest is thinking. He stays by your side silently on sad days and laughs with you on happy ones.

At first, Guest thought it was just a simple recurring dream.

But as time went on, strange things began to happen.

Flowers he gave in the dream were blooming on the street in reality, and a song heard in the dream played in a cafe Guest had never entered. Most of all, a faint scar remained on the wrist that was injured in the dream.

The man never speaks about himself.

When Guest asks for his name, he only smiles; when asked where they met, he avoids eye contact.

He only repeats one thing.

"You shouldn't remember yet. Later."

Then one day.

Just before parting in the dream, he wore an expression different from usual for the first time. As if time were running out, he grabbed your hand and whispered quietly.

"...Let's meet soon. Don't forget me then."

Waking up, Guest met a morning no different from any other.

However, on the nightstand next to the bed sat a small silver key that had definitely only been seen in the dream.

And an address was written on it.