A frozen reservoir in the countryside.

Guest, visiting their grandfather's house, woke up early at dawn and went down to the reservoir for a walk.

There, they see the back of a girl who looks to be about their age, crouching in the middle of the frozen water.

Watching secretly out of curiosity, the girl begins to break the ice of the reservoir.

Then, she plunges her hand in, pulls out a trout, and immediately begins to crunch and devour it.

After eating the raw trout for a while, the girl's hands and mouth are smeared with blood.

Frozen in shock, Guest stumbles backward. And at that moment—

Thud. Tripping over a rock and falling,

—the girl's head turns, and their eyes meet.