Disclaimer: First Chapter
Story Start!

Full Immunity.

"There... if that Assassin shows up again, we aren't going to be screwed over by poison at least." Naruto had spent days getting fully adjusted to the poison and blood they had now fully used up. His body had attained a strong immunity.

Atalanta was just sitting on the couch reading a letter.

"Master, that Assassin was the Last Servant to be summoned... the war has started." Atalanta showed him the letter that had arrived from the other members of their team. "Hatake and Saber are going to invade the nearby Ryuudou Temple and set up a Bounded Field there... we're requested to help." Atalanta didn't want to do it.

Naruto hummed in thought, and went to the window to open it.

"Oooooh... fresh air..."

"... That is much better." Atalanta had been stuck in the apartment with Naruto sweating constantly as his body got used to poison. She had gone nose blind to the smell, but the nice smell of the fresh air was certainly something she appreciated. "... are we going to help. They would like a close combat and long range to help Caster set up the field." Atalanta pointed out it wouldn't just be Saber they were going with.

"Caster... with that guy... no, we're not going." Naruto didn't want to go with the boy that gave him that cocky smirk.

Something about him irked him.

"That is good news." Atalanta wrote a huge No on the letter and gave it back to the bird that delivered the letter in the first place. It flew off, and she watched it go with satisfaction that her abilities would be somewhat safe from discovery by her allies. They knew she was an Archer, but that was all they needed to know. 'With Medea around, if that woman sees my face... it will be hard.'

"I don't trust that duck haired guy... his servant too." Naruto didn't like the aura around them.

They seemed like the kind of person who would do anything in pursuit of their goal, no matter how dark the deeds they needed to do were. He couldn't work with somebody like that.

"So where should we go?" Atalanta didn't want to sit around doing nothing.

-Fuyuki City: Hyatt Hotel-

"... Ah! The night air is a wonderful drinking companion!"

"Master... why did you invite them?" Atalanta was annoyed with Naruto's choice to invite Gaara and Jing Ke to the gathering on top of the tallest building in all of Fuyuki. From her vantage point, she could see all of Fuyuki with no issues. Even if she couldn't sense servants anymore, with her eyesight if there was a battle going on, she would be able to see it and rush there with her speed.

"Because, 3 sets of eyes are better than 2."

"3?" Gaara asked Naruto as he looked through his binoculars around the city.

"... Jing Ke might not be looking straight." Naruto deadpanned as he looked at the steadily more drunk woman as she enjoyed some hard booze. "... We're just looking for people who might be Masters, or people dressed so weird they HAVE to be servants... anyone jumping across rooftops... most likely a servant." Naruto stated.

Atalanta kept her bow on her and was using it to focus her sight on singular targets that fit those descriptions.

"I see Rin and Archer... and I see they are... it looks like a young person, gender unknown, blond hair and green eyes wearing english armor... possibly a Saber class." Atalanta could see Rin and her Archer in the distance. She pulled her drawstring back with loaded 2 arrows that she aimed at Archer and (possible) Saber's heads.

Naruto looked where she was looking.

They were standing outside of church in an open area.

"Looks like they are talking to... who?"

"That is Ruler." Gaara looked to where they were looking. "He was the Servant summoned to oversea the grail war." Gaara informed Naruto of who the man was.

"Nicely dressed dude... looks like he came straight from a crime novel." Naruto laughed as he looked at Ruler, before he focused his attention back to Saber and the boy who was with her. "... and that is totally a girl... but she does have a pretty handsome face. I could see her passing for a pretty boy." Naruto looked at the woman.

Naruto looked at her armor, before he took his eyes off of Saber and on a book in his lap. He started to search through the book with various pictures, before he looked at the woman again through his binoculars.

"... That is... early 6th century armor... English... there is a British symbols on the front of it. I think that... yeah, her gauntlets are those worn by sword users... I think she IS a Saber class servant. Ah... they are under attack!" Naruto pointed out to Atalanta. She looked at what was happening as well, and she saw it two.

A young looking girl with a HUGE brute of a servant were attacking Saber, the boy, and Rin.

"... So there is clashes among the Servants of White... it seems..." Atalanta's jaw dropped when she saw WHICH servant it was that was attacking them.

No way she could NOT recognize him.

"Atalanta?" Naruto asked her.

"That is Heracles, the greatest hero of Greece... that man is... we need to help them take him down! On their own, they will all perish... if we don't stop Heracles now, he will become too much of a threat later." Atalanta offered support fire. She unleashed her strongest shot, and even from the distance she was at, she saw it pierce.

She pierced Heracles right in the temple, with her arrow coming out of the side of his head and killing him.

"Hit."

"It won't be enough... to kill him, we need to kill him 12 times at least. At most, I can manage to kill him 1 more time with a regular shot... and 2... maybe 3 more times with Noble Phantasms." Atalanta couldn't see herself winning a direct fight with him. "... if you kill him, he becomes that more resistant to the way you killed him... and no attack below A-rank even effects him. My strongest shot has the power of an A-rank attack..." Atalanta fired another arrow at full power.

Heracles was able to dodge it, while also engaging in a sword contest with the Saber that he was currently fighting against.

"... She's pushing him back!" Naruto noted when he saw that Saber was actually outpacing Heracles in their fight, Atalanta's surprise shot against Heracles had been enough to secure her a lead in the fight. Saber dodged a close call with Heracles and a kick, but she severed the tendons in his legs, before pulling her invisible sword up and slicing him from hip to shoulder, cutting through his heart.

2 kills.

"... I can't do anything here." Jing Ke laughed at how she was useless in the fight.

"I can." Gaara stated as he extended his hand.

Heracles revived, but as soon as he went to counter attack Saber, his arm was pulled back when sand covered his wrist and solidified. As soon as he tried to free himself, Atalanta got off another deadly shot that pierced him through both of his eyes, nailing him right in the brain twice.

3 kills.

Gaara put out both of his hands, and as Heracles was reviving his entire body was covered in sand. Archer, Rin's Archer, filled the sand with a hail of swords that he threw into the mix. Atalanta mixed in her own arrows, a volley of them since she had maxed out the number of times that she could kill Heracles with her normal number of shots.

"Desert Coffin."

Heracles was crushed when he revived, bringing the total number of times he had been killed up to 4 times. He broke free of his sand prison when he revived, and unleashed a roar. They couldn't hear it from their location.

"... I'm not releasing my Noble Phantasms here, not at the beginning of the war. The most I will do now is provide cover fire." Atalanta could kill Heracles 3 more times, it might be possible for her to kill him 4 times if she pushed herself. 2 of the kills though would need her to get in close to do it, and it would put her in too much risk.

Heracles was dodging the sand, until Gaara stopped.

Heracles went back to fighting Saber, and he scored a hit against her armor that glanced off of her. Her shattered her armor, but it actually healed itself and she went back on the offensive to match him.

"Somebody... somebody is matching Heracles in a fight... what kind of hero is she?" Atalanta couldn't believe what she was seeing. A servant was skillfully going toe to toe with Heracles himself in a match, and doing so with a brave face.

Raw mana.

Saber swung her invisible sword, and a Burst of Mana came out of the blade and consumed Heracles, damaging his body severely enough that Saber kicked off of his sword and sunk her sword deep into his chest. She swung her imbedded sword upwards, and split his head in two, killing him another time.

5 kills.

"The girl, she has summoned familiars to assist the fight." Naruto noted that the white haired, red eyes girl, had actually started to help in the battle... and she seemed pissed off for some reason. "Atalanta, take down the familiars." Naruto pointed in their direction.

She nodded.

"... Gladly." Atalanta loaded up several arrows and unleashed them.

Her arrows pierced the glowing familiar birds, and destroyed them much to the visible shock of the white haired master of Heracles. She plucked out more of her hairs, and created more familiars, but Atalanta destroyed them the second they started to move. She shot another cover fire shot towards Heracles that he dodged, and she gave Saber a chance to counter.

Rin had rushed into the battle as well.

She was visibly seen throwing 5 gems towards Heracles, with the gems shattering and forming a crushing barrier around him. Heracles was killed by the magic attack once more.

6 kills.

Not only was he killed, but the gem barrier around him kept his movements sealed. A volley of arrows from Archer pierced the barrier, and when Heracles revived, he was killed another time. He broke out of the barrier completely when he revived.

7 kills.

"Master, there is another battle at the temple... Hatake, our Saber, and Sasuke with his Caster are being attacked. Should I assist them as well?" Atalanta asked Naruto when she saw another battle taking place between a multiple of servants.

"Keep your eye on it, but you said it yourself... beating Heracles is more important."

"It is... if his Master can somehow replenish his lives... then if we let him escape, he will become back stronger than ever before." Atalanta added her cover fire to Archer's as well, allowing for Saber to push Heracles to the brink. She aimed an arrow and intercepted a spell the white haired girl had aimed at the orange haired boy, destroying it before it could get to him.

Saber got injured when Heracles punched her in the head.

A huge arrow pierced Heracles in the center of the chest, and knocked him flying towards the middle of a park... before the arrow exploded and destroyed the park. The other Archer had unleashed a Noble Phantasm attack of some kind, and killed Heracles another time. Atalanta focused on dealing with the spells and familiars from Heracles' master though, since a Master was just as much of a threat as a servant could be.

8 kills.

"I'll kill his Master-"

"No, don't kill her." Naruto grabbed Gaara's hand when he extended it to kill the girl from a distance with his sand, he shook his head. Gaara nodded and went back to looking at Heracles through his binoculars instead. "... if they try to escape, trap Heracles leg or something."

Gaara nodded.

He turned the earth under Heracles into sand, and the giant slipped up in his counter attack against Saber as she swung her sword and unleashed a burst of mana that destroyed his head.

9 kills.

The girl looked pissed and frightened.

A golden light.

"... That light... that sword." Atalanta recognized it in an instant when she saw Saber unveil the sword in her hand, that had been clouded by invisible air. She raised her sword up, before she brought it down. "... Excalibur..."

"King Arthur?" Naruto asked.

Heracles was no more, the rest of his lives were all wiped out by one blast that was so powerful that Naruto didn't even need his binoculars to see it. Heracles was no more, and the sky was cleared away from it as well. When the light died down, there was just a long stretch of crater where Heracles used to be.

"She... took the rest of his lives with one blow... that is King Arthur." Atalanta looked towards Naruto, before she thought about it. "... Master, should I take them all out from here?" Atalanta asked Naruto.

"... No... they were distracted by Heracles earlier, but they know we helped them. Our best bet is not to start any conflict now... that girl..." Naruto looked through his binoculars once more, and he saw the girl had broken down and started to cry with all of her heart. His heart went out for the girl, who seemed to have forged some powerful bond with her servant. Naruto grabbed his heart when he saw her crying, and he wanted to go and comfort her.

She lost something so important to her, he could tell... and it hurt him that he had been part of the reason why she lost it.

"Master?"

"Naruto?"

"... It would be wrong... going any further than this would be wrong." Naruto didn't know what the White Faction seemed to have beef with each other, but there was already a girl with a broken heart that just lost her servant in an unfair match.

Atalanta could sense that.

"... I assure you Master... that match was in noway unfair... 3 servants and several Masters teaming up to defeat Heracles is the minimum... but... if it is King Arthur... maybe we didn't need to get involved at all." Atalanta could tell that Saber could have beaten Heracles all on her own if she had gone with her full power from the start, but as it was... she was now the biggest threat.

"... also... we kind of announced our location with all of those sonic booms." Naruto pointed out with more of a deadpan look.

"Eh?"

"... I would guess there are some servants heading towards us right now." Naruto pointed out, since the last time Atalanta unleashed her strongest shots to cross an entire city... it ended up attracting the attention of other servants. Atalanta grabbed Naruto the second he pointed that out and tossed him over her shoulder, before she jumped off the building.

Time to retreat before they were surrounded!

Chapter End!
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Servant: Heracles and Master: Illya
Vs.
Servants: Atalanta, Emiya, and Artoria and Masters: Naruto, Rin, and Gaara

Result: Heracles Defeated