Nighttime.

A cacophony of engine noise and snow being smashed under the wheels of a vehicle echoes in the closed environment.

Chito: I'm hungry...

Alongside with the bantering of two girls. Chito and Yuuri.

The two was making their way to the unknown on a Kettenkrad to survive together. Inside a dark underground facility, they make their way to God knows where. But suddenly, a surge of wind leads them to the light. And they make their way outside, freed from the dark finally.

Chito and Yuuri: Woaaah...

It's nighttime. With a starry sky.

Yuuri: Let's celebrate us getting out with some soup!

As Yuuri exclaims her cheer out, they encounter a survivor. And they seem ready to encounter them.