Dark Shell: Ori no Naka no Namameki

The action takes place in an alternate reality where Japan is engulfed in chaos and destruction. Only armed groups and few surviving citizens can be found on the streets.

One day a group of girls trying to find a safe haven encounter one of these groups. In exchange for protection from the dangers of the outside world, the girls agree to perform certain services. However, Moe, one of the heroines, does not want to accept this state of affairs and tries to avoid violence.

In the end, a single sniper wipes out the entire group except for Moe.