The Secret Weapon

Summary: In London there are two enemy gangs ran by Snape and Black. Sirius Black's gang members are being killed off with Severus Snape's secret weapon, his niece. Hermione falls for Sirius Black but what made Hermione so loyal to her Uncle's gang? Non-Magical, AU

DISCLAIMER: I do not own any of these fabulous characters who are all owned by the fabulous JK Rowling and I am not her. Most pairings follow the books others don't.

A/N: I came up with this idea after watching Kick Ass on Saturday and I thought how awesome would it be to take away the wands and give the Harry Potter characters Butterfly Knifes and Hand Guns. Then I thought instead of having The Order and Death Eaters let's make them two gangs ran by two people who hate each other. I got Sirius and Snape and so the gangs Black and Snape were created. I then had to think who my Hit girl is and I got Hermione Granger. I love bad ass Hermione and so I through in the fact that she's Snape's niece and loves Sirius and I got myself a storyline. I have a few more secrets but I can't say anything with out giving stuff away ;) Hope you enjoy.

WARNING: There will be violence in this story and in this chapter. If you don't like don't read.

~~~~~~~~~~~~~~~SBHG~~~~~~~~~~~~~~~

"Who have we lost?"

Sirius Black was looking out the window of his manor and across the green of his land. He had just watched his troops come back smaller than it had been when they left and his best guy and best friend James Potter came up to report.

This had been happening a lot recently. The Black Gang and Snape Gang's had always been enemies ever since they were 19 years old and the gangs had begun. Most of Sirius' family was on Snape's side but most of the time Sirius won. Until 5 years ago and Snape seemed to gain an advantage, a small woman. This woman had been killing off his gang left right and centre and he had ordered his members to kill her yet she seemed to be impossible to touch.

"Benjy Fenwick, Dorcas Meadowes, Emmeline Vance and Edgar Bones were missing when the group came back. Marlene, Fabian and Gideon were able to escape but that's all" James replied sadly.

Sirius turned to him "And the girl?"

"Still alive. The other members of Snape's group hardly did anything. We were able to kill Barty Crouch Jr and Augustus Rookwood though" James said.

"How many of Snape's escaped?"

"Yaxley, the Carrows, Avery, Walden Macnair, Lucius Malfoy, his son Draco and of course that girl" James listed "According to Marlene that girl is so good our group could hardly get near the others and she was just picking them off as she chose. Emmeline just got Crouch before Malfoy Sr shot her and as Benjy was about to shoot Malfoy when the girl took out a switchblade and stabbed him. Edgar got Rookwood and the girl shot Edgar and Dorcas soon after. Marlene and the Prewett's just managed to escape" James explained.

Sirius rubbed his temple before opening the drawer of his desk and pulling out the handgun he kept there and looked at it "If you want something done right you have to do it yourself" Sirius told him.

James looked shocked "Sirius I don't think that's a good idea, you'll get yourself killed you heard what Marlene said 'they could barely get near to group' the girl herself is hard to chase" James exclaimed.

Sirius looked across the desk at James leaning across with his hands firmly on the desk "This girl" he spat "Has been killing off my guys for 5 years now. We've lost Caradoc Dearborn, Elphias Doge, Mundungus Fletcher, Sturgis Podmore, Hestia Jones, Kingsley Shaklebolt and most of the Weasley's except for Fred and George and Ginny and Ron who changed to Snape's side. Now we've lost 4 more people and soon enough there will be none left. Since no one else can kill off this little girl I will" Sirius explained.

"Then I'll be there as well" James reasoned.

"No" Sirius turned to him "I won't let you get killed James".

"And you think I'll let you be killed! We've been at this together since we were 18 Sirius. You may be the leader of this gang but you can't just go around acting like you can order me around! You're my best friend and if you go there alone you'll be killed" James told him "I'm going with you and we're bring a group" James turned to walked to the door saying over his shoulder "I'll go get the group ready".

Sirius looked as James left and couldn't help the smirk that twitched at his mouth and shook his head as he begun putting his Desert Eagle MK 1 in his gun holster and started collecting all his other weapons. Switchblade, Butterfly knife, Trench knife, a Dagger, Berretta 92FS, Mossberg 500 and anything else he could get his hands on and bring with him with out dragging him down.

He couldn't believe it was one girl who was killing off so many members of him group, 15 people! One girl! He had never lost so many members. If his group couldn't kill her then he'd kill her himself. Sirius wasn't going to let any people of his group die because of her and he wouldn't let Snape get the advantage when he was doing so well before. His group was more skilled than Snape's and this one girl comes along and now his gang was being killed off and Snape's was barely more than touched.

Sirius made his way down the stairs to see a group of his most talented fighters. James, Remus and Peter were there as they had been since the day this had started. Harry, James' son was there too and his girlfriend Luna Lovegood who was more skilled than people expected. Frank and Alice Longbottom were there too as they were a fiery duo when they started and Tonks his cousin who had married his friend Remus. Along with them was Susan Bones, Terry Boot, Michael Corner and Cho Chang they weren't as talented but they were some of the best and they were a lot sneakier.

Sirius shook his head "No I won't have it. You are not all going there is too much risk of going after this girl and…"

"Not having the best" Remus interrupted "We're going Sirius and we'll have Susan, Terry, Michael and Cho as look out you know how good at hiding and sneak attacking they are. It'll be fine" Remus explained putting his gun in his belt.

Sirius opened his mouth to complain but Tonks stopped him "Stop being such a pussy Sirius and deal with it" Remus laughed at his wife.

"You two shouldn't come you just had a son" Sirius explained.

"So do James and Lily. You're his god father" Tonks said as she wrapped an arm around Harry.

Sirius rolled his eyes "James and Lily's son is 20 years old and yours is 6 months there is a difference. Plus Harry here seems to think he's coming to" Sirius raised an eyebrow at the boy.

"I am coming, that bitch almost got Luna I want to see her go down" Harry explained.

Sirius smirked "Well I don't know if you'll see that as if she is willing to join us then I wouldn't say no to having someone that skilled on our side. It's trying to get her that's gonna be the problem and depending on how loyal she is to Snape. We most likely will have to kill her".

"Enough of the chat, are we leaving?" James asked

Sirius nodded "Yeah, Yeah come on" Sirius said.

He didn't know however that Peter had already informed Snape on how many were coming and there plan to go after the girl. Snape's gang would be well prepared.

~~~~~~~~~~~~~~~SBHG~~~~~~~~~~~~~~~

"Hermione!"

Hermione looked up from her book to see her Uncle Severus walk in. He was her mother's half brother and her father's best friend. Hermione had been trained by her father to fight and use guns and knifes and even just her fists. She was trained from the age of 6 and when she was 15 she joined her Uncle's group. Not because she wanted to but because her father did. Her mother Jean had run off because of her fathers plan to train her to fight and make her join her brother.

"Yes Uncle Severus" Hermione looked at him.

"Black and his troops are on the move. This is your chance to wipe out Black and his pathetic friends Lupin and Potter. If you kill off Pettigrew as well we won't care. Get rid of Black and the other two we win" Snape told her.

Hermione groaned and rolled her eyes "Didn't I already fight today?" she said standing up setting down her book.

"Yes but this is our chance to be rid of Black and his best fighters, Pettigrew sent ahead the message. We're sending you out with Lucius, Regulus, Bellatrix, Rabastan, Rolphudus, Mulciber and Draco, Not that you'll really need them. I'll be there as well but I won't be fighting unless need be" Severus explained "Go get prepared" he said.

Hermione walked off to her room and threw on her black skinny jeans that were easy to move in, a black vest top and a leather jacket. She slid her black mask on over her eyes and looked at herself in the mirror. This had been her outfit since she was fifteen and yes that meant she hadn't grew taller since she was fifteen but being a small 5'1 came in handy for moving around quickly and hiding. Her hair was short and choppy because when she was 16 she was almost caught by her hair so her father took her ponytail and chopped off her long curly brown hair the only thing she had gotten from her mother.

Hermione shook her head forgetting the thought of her mother before slipping on a belt the held her guns and knifes, a small knife holster slipped around her arm and she walked downstairs to get her stuff. She walked down to the garage on over to a large metal door with snakes all around it. Beside it were a code register and a fingerprint scanner. Hermione typed in the code 230460JG and pressed her thumb to the scanner and when the green light showed as she walked into the room.

Inside the room the walls and boxes were covered in guns, knives, swords, bombs and any weapon that was possible to their hands on. Hermione walked over and grabbed a few hands guns and placed them in her belt under in t-shirt, swung a shot gun around her shoulder, and placed some ammo in a pouch on the belt. She grabbed her Butterfly knife the blade had her initials inscribed on it as it was her first knife, a ballistic knife, a fighting knife, a Rampuri knife and just some blades for the ballistic knife. She attached a samurai sword to her back just in case and stepped out of the room.

She made her way to the hall where the rest of the group were being given machine guns and bullets before they were supposed to leave.

Severus turned to her and raised an eyebrow "Did you really need the samurai sword?" he asked.

Hermione smirked "It's the only virgin weapon in the room. It needs to taste some blood" she replied.

Snape rolled his eyes "Right you know what you have to do now get going".

The others walked out of the room with Hermione behind them ready to fight.

~~~~~~~~~~~~~~~SBHG~~~~~~~~~~~~~~~

They found Black's gang in an abandoned area and it wasn't long before the sound of guns going off, bullets searching for victim's blood to paint London red. Hermione was staying hidden as was her Uncle Severus as he didn't have plans to fight just watch Black die. Hermione noticed a girl standing in the fire escape of an apartment building aiming for Draco. Taking out one of her hand guns she pointed towards the girl and pulled the trigger getting her right in the head as she fell over the fire escape. Black seemed to look towards the car she was hiding behind and aimed his gun walking over.

Black shot and Hermione rolled out of the way of a bullet before sneaking into one of the abandoned buildings and going out the side door into a alley way. Hermione noticed a man standing there and he turned around to face her as soon as her heard the door open. He instantly tried to fire a gun at her at which she ducked taking out her own gun and firing at him missing by an inch as he slid out of the way just grazing his shoulder and he fired at her again and again. For every bullet the missed her he dodged hers as well and when she ran out off bullets she threw down the gun focusing on dodging the bullets he aimed as she pulled out her ballistic knife pressing the trigger and the blade shot out getting the man through the wrist to which he dropped his gun and cried out in pain Hermione took out the fighting knife and stabbed him in the throat before tucking both of her knifes away again and stealing his gun and looking out around the corner. The door of the building she had exited was opening so she ran up the steps to the top of the building she spun around when she saw a woman waiting there for her holding a gun right to her chest.

Hermione smirked at the woman. She loved the adrenaline rush of almost being caught the woman went to shoot just as Hermione knocked the gun side wards shooting a guy on the buildings on the other side and shocking the girl. Hermione grabbed the gun from the girl shocking her and she brought out a regular pocket knife to which Hermione smirked and brought out her switchblade. The girl tried to get Hermione with the knife managing only to scrape it along her cheek. Hermione kicked the woman in the stomach and she fell back on the ground. Hermione went to stomp on her only for the girl to roll out of the way and throw her knife at Hermione getting her on the shoulder. Hermione pulled it out and the woman thing she had distracted Hermione for a while rolled onto her hands and knees to push herself up only for Hermione to kick her to the ground again. Hermione straddled the woman's waist and stabbed the woman in the shoulder where her knife had got Hermione and nicked her cheek with the knife. The woman punch Hermione in the nose, blood running from it distracted Hermione long enough to steal her knife and push her down.

The woman smiled smugly thinking she had won and Hermione grabbed the woman's ankle making her fall the woman made a stab for Hermione's neck only for Hermione to roll quickly and get up. She to got up but when she did she looked around and Hermione was no where in sight, she heard a rustling around the trash cans and she walked over knife at the ready and looked behind the trashcans to find nothing. She felt a sharp pain through her stomach and looked down to see a long blade through her stomach and watched as it was pulled back through her before it was swiped at her neck.

Hermione smiled at another victory and the fact that she finally fought someone who could kind of fight. Putting the samurai sword back in its place she ran and jumped onto the next building running down the fire exit and jumping down the last two flights. Hermione found the body of Mulciber with about 10 bullets in his chest. She shook her head and rolled her eyes before looking around the alleyway to see if anyone was watching. When she was sure the coast was clear she slid along the side of the building and peaked around the wall.

On the other side there was many injuries but not many deaths. There was two dead bodies from the people she had shot earlier but other than that the blood came from only injured bodies. Hermione scooted around to the other building closer to all the action and looked about for Black spotting him she raised her gun to shoot the man but when she fired he was gone.

"Shit" Hermione whispered and spotted him heading towards the alleyway were the dead guy she had killed earlier was. While he was gone Hermione looked out to see if she could sneak around the building and she saw Potter Sr just about to shoot Regulus the only person she could stand. Shooting the gun the shot hit him in the hand and he dropped the gun. She had aimed for the side but last minute changed her mind so that he couldn't shoot. Her shot had alerted Regulus who quickly ran off in place of cover and she saw Potter cursing and looking around for were the shot come from. She took another hand gun from her belt and aimed at Potter's head. Seconds from pulling the trigger she felt the cold barrel of a gun pressed to her head and a cold voice from behind her.

"Drop the gun Bitch and don't even think about firing it"

A/N: A lovely cliff hand and on the first chapter to. Review and I will hope to update the next chapter soon.