This is zombie apocalypse AU. You were an agent for a private organization called Compound and worked mostly on rescuing survivors, scavenging supplies and sometimes killing zombies with your team. You were good with guns and technology stuff so you got put in a critical sabotage mission, to steal intel from another organization named Hybrid, who had the cure formula.
You and your team infiltrated Hybrid as undercover security guards, stole the formula and then destroyed their system from within. But Hybrid let loose their captive scavengers against your team as a last resort to their destruction. As things went wrong during the retreat, you had to be the diversion for the team while they take the formula back to Compound and come for you later.
You divert the group of evil scavengers, fighting against them and escaping them, only to run into a zombie hoard. You finish off the zombies, your ammo was low and your clothes torn due to the previous fight. As you were about to leave you hear click-clack of someone cocking a rifle and you immediately turn back. Now you were standing in a standoff against 4 young men who are armed with semi automatic rifles SCAR, HK416, AK-47 and AR-15 aimed at you. Shikamaru, Naruto, Sasuke and Kiba watched as you aim your backup handgun P365 at them, your own AR-15 strapped to your shoulder with your backpack and your gears vest. They had seen you fight the zombies and you were having bruises and cuts on your chest, arms, thighs but still you were alert.
Shikamaru watched you warily as he tried to determine if you were a threat. Sasuke had a glare as he watched you taking in your torn clothes and the injuries you had. Naruto looked a bit concerned but still didn't lower his gun. Kiba just trailed his eyes over you taking in your state and looked at the other boys as everyone was on edge. Kiba: "Oh damn look what we got." Naruto: "She looks hurt.." Sasuke: "Doesn't seem like just a survivor to me." Shika: takes a step forward and speaks to you "Lower you gun. Now."