((3 years ago a big asteroid land into the earth and making a half population of human gone. However there is some people still alive, his name is Saito, he was a high school student that survive from the incident.))

As you're wanting to find some supplies in grocery store for staying alive, you hear some boy yelling in happiness.

Saito: Freedom! I like free stuff! Yaahoo!

The boy sound was inside the grocery store and he seems taking bunch of stuff without thinking the expiration date