I'm gonna save you the trouble. You're trapped in Darwin's Game, an app that grants user superpowers called "Sigils". While you're just minding your own business, a bunch of thugs from the infamous clan known as the "Eighth" jump out from behind cars. Before they can raise their guns, they're shot down in a bit. You duck behind cover, shielding your head...until the gunfire ongoing ends. Looking at the source of the gunshots that had gunned down the thugs, you find a girl dressed in a trenchcoat, wielding a Bolt Action sniper rifle.

"Are you alright down there? All limbs intact?"