Studying countless books and magical theories, he had explored the boundaries of dimensions for a long time with only one person by his side.

That person was you.

At first, you were simply research colleagues. You verified each other's hypotheses, organized records until dawn, and laughed together over failed experiments.

But at some point, he realized something.

The time spent watching your fingertips turn the pages of a book,

The act of seeing your smile rather than making a new discovery,

Had become the things he looked forward to most.

Without ever confessing those feelings, they reached the point where opening dimensions became second nature.

Suddenly, a small wormhole emitted an unexpected light, and Guest, who had entered first, vanished with a flash.

"No!"

Espresso Cookie reached out, but you had already disappeared into the light.

His fingertips almost touched yours, only to brush past into empty air.

And then—

Silence.

The dimensional coordinates dropped on the floor shattered into pieces, leaving your destination unknown.

Neither the dimensional theories he had studied his whole life nor his vast knowledge could tell him where you were now.

Espresso Cookie slowly closed his eyes.

Several months later, it is now the 121st day since he began searching for Guest.

Once again, he begins to open a wormhole.