The final battle approaches

(Author's Note: Give me power stones, please fulfill my dream!)

...

3rd Pov

Both of them got ready for the second round of the battle, Mordred attacked him not waiting any further swinging her sword with intent to cut him down, Shirou blocked it and parried it, both of them started exchanging moves, the sound of their swords hitting each other reached far and wide in the reality marble.

*Clang* *Clang*

Mordred suddenly threw her sword at him taking him by surprise, he narrowly dodged it only to be welcomed by a powerful kick in the stomach, he coughed out blood as lightning cracked around Mordred's leg as she kicked him again this time on his face throwing him meters away.

Using her immense speed she reached above his body and started sending a barrage of punches at his face, coupled with her hard armor and Mana burst she broke his nose and half of his teeth, though he managed to regain his footing as blocked her attack with his hand and made some distance between them.

"And you call yourself a knight fucking bitch", he said with anger, she smirked and said," I am a Knight, but winning a battle and being a knight are two different things", then she summoned her sword at her hand and so did Shirou, both of them again ran towards each other breaking sound barrier and started fighting each other.

*Clang* *Clang*

The movement of their attacks reached tens of swings per second, from time to time Mordred would attack in a way that could be only said not Knightly but Shirou this time was more careful and easily managed to avoid her attacks, as time passed Mordred started falling disadvantage, while Shirou's wound started healing hers only got worse.

The fact air was poisonous didn't help her either by now it was only through her fucking sheer will that she was still attacking, her body was completely poisoned and she didn't have much time left, soon she reached her limit," Fuck", she said feeling pain throughout her body.

Shirou smiled and said," It seems the effect of the command spell your master had used had worn off", she grunted as she stumbled and fell,' Master! Use another command spell on me! ', she mentally messaged him but didn't get any reply, her eyes widened as she again said,' Master!! Can you hear me?! ', but again didn't get any reply.

She grunted and looked at slowly approaching Shirou and said," What the fuck you did?", he stopped and then cruelly smiled," Trying to contact your master? It's useless now before it might have worked but my Reality Marble is completely on full throttle now, it's completely sealed from the outside even command spells are useless", he said.

Her eyes widened," This is how I die? Without getting my wish?", she muttered, the image of her father flashed through her mind, "I- I wanted to become king, so I can end his solitude", she again muttered closing her eyes as she felt her life slipping away, Shirou didn't attack as he wanted to die her slowly writhing in pain from poison rather than giving her a quick death.

"Maximized Thunder Lance!"

A lance of thunder attacked Shirou, who partially evaded it though it managed to hit his chest partially passing through it and burning the skin on his chest, "Another one?", Shirou said getting ready to attack only to be stabbed through trident next moment, he coughed out blood looking at the figure who held the trident, "Ho-How?", he said in disbelief.

Poseidon didn't bother to reply and quickly severed his head using his sword next moment, after that he quickly chanted," Maximize Fire Ball", and a fireball appeared on top of the magic circle in his hand, he threw it on Shirou's body burning it, then turned to nearly dead Mordred and quickly moved to her.

"Maximized Destoxify Poison, Maximized Heavy Recovery", he said, the first spell dispelled all the poison from Mordred's body, and the second one healed her injuries, Poseidon felt more than half of his mana being completely depleted, he took her in his arms in a princess carry and waited for a bit before frowning.

' System why the Reality Marble hasn't been destroyed yet? ', he asked, system replied,[ Master one cannot escape this Reality Marble through normal means as long as it has a mana supply which it is getting from another Shirou, so this Reality Marble can persist as long as he isn't killed or mana supply isn't cut].

He clicked his tongue hearing that," What a hassle", he said before looking at unconscious Mordred who started getting poisoned again, he used a normal Destoxify poison spell on her before using Maximized Protection against Negative energy and then started running back towards where he left Jeanne.

' System is there any way to escape this? ', he asked while running,[ Yes Master, by claiming the reward you got from slaying Seigfried you can escape, I will give you a reward specifically for this], system replied, his eyes widened a bit before he asked,' You can do that? '.

[Master, it isn't a voluntary and specified quest so depending on your merits and wishes I have to reward you, although this won't work with voluntary quests since they will have a fixed reward, they have an advantage over involuntary quests that their rewards are generally better than merits you need to do to complete while in involuntary quest the reward is proportionate to the merits], System explained him.

He smiled hearing this, and soon he reached back to Jeanne who seeing him said," Lord Poseidon you are fine!", she looked relieved then glanced at the unconscious Mordred who looked was sleeping rather than being unconscious as she drooled while snuggled near his chest making herself comfortable in his arms, Jeanne looked at the scene speechlessly while Poseidon dropped her on the ground without any care.

"Ouch!", she said as she opened her eyes, she rubbed her head before looking at Jeanne and Posiedon, "Eh? I am still alive?", she said in disbelief as she examined her and found no wounds which further surprised her, she glanced at Poseidon at understood what happened and asked," Are you the one who saved me?".

He nodded and said," Yes, I saved you, so that returns the favor I had for you saving me earlier", she smiled and said," Thanks, anyway where is that long white-haired bastard?!", he calmly replied," Dead", Mordred became disappointed and said," Is that so? I wanted to be the one to kill him by separating his nasty head".

"Don't worry, I did separate his head while finishing him off", he said, she smiled happily and stood up then patted his shoulder," Nice! It seems we have a lot in common", she said, Poseidon just ignored her, meanwhile Jeanne suddenly asked," He is dead? Then why this Reality Marble is still here?!".

Mordred looked around a bit confused, while Poseidon asked," You didn't use your skill to check this Reality Marble?", Jeanne's face become flushed as she replied," I- I forgot to do that", she lowered her head completely embarrassed, Poseidon coldly said," You have been too clumsy", hearing that she bowed and said," I am sorry!".

" Well that doesn't matters, how are we gonna escape from here?", asked Mordred, Jeanne somehow calmed herself down and said seriously," I don't know, this Reality Marble is weird and command spells aren't working either", Poseidon sighed and said,' System I claim the reward, now give me something through which we can escape from here '.

[Ding!]

[You have completed the hidden quest, ' Slay a Dragon Slayer! '

Details: Dragon Slayers think of themselves as bosses since they slay dragons! Show them their place and give them a reality check by slaying a powerful Dragon Slayer, I bet they didn't see that coming!

Rewards: *1/4th part of Custom Divine Dividing Sacred Gear*

Note: It is completely Immune to Dragon Slaying Magics and Weapons unlike the original version]

[Ding!]

[You have slayed one of the strongest Dragon Slayers of all time! For that, a reward will be bestowed!

Custom Reward: Absolute Spatial Teleportation Card x5

Note: It can teleport one anywhere without any cost of mana, no matter the place, even if it is a different timeline or world it can teleport you there! Though do remember it will fail to work if you try to teleport in the past or future, it works on Omniversal time thus if you try to teleport to a different world please do not expect to get teleported to the period you wanted to! Also, be careful with selecting the place, if you do not specify the place then you might be yeeted to a random place, random world, or random timeline.

Using Method: It will teleport you to the place you want and it will do it]

Poseidon's eyes widened seeing the rewards especially the first one, he knows how powerful Divine Dividing is! Though it does have a major weakness of being weak against Dragon Slaying Magics, abilities, or weapons, this version of Divine Dividing doesn't have this weakness making it op as fuck. He smiled excitedly completely confusing Jeanne and Mordred who saw his expression.

After that, he checked on the second reward satisfied, though he became wary after he finished reading the description and asked,' System we won't be teleported to a different period if we were to use this right? ', System simply replied,[Nope], hearing that he breathed in relief and summoned three teleportation cards piquing Mordred and Jeanne's interest.

"What is this?", asked Mordred as Poseidon handed him one, Jeanne too looked curiously unable to discern it with her skills, though she could feel it was something special, Poseidon said," It is our ticket to out here, just hold it and wish to teleport out, also do make sure to specify the place otherwise let's just say you will be at a place you wouldn't want to".

"Really?! These card-like things can teleport us? Is that your Noble Phantasm?!", asked Mordred excited and curious, Poseidon said," It is more like a consumable, anyway I will see out of here", he teleported outside, Mordred pouted seeing that he teleported not answering her question," Wait a minute! You need to tell me!", she said and teleported outside as well, Jeanne followed them as well and teleported outside.

They appeared in the place where servants of both teams battled, as soon as they came out Claules approached them and asked," Where is Astolfo?", Fiore moved towards them as well and asked," Where is Archer?", Poseidon patted Jeanne shoulder signaling her, she nodded and then looked at them.

" They are dead", she said, hearing that both sister and brother became sad, Fiore clenched her fists and so did Claues, seeing this Jeanne sighed and bowed surprising them," I apologize, it was due to me not doing my duties, I failed", she said clenching her fists, Fiore said," No need to apologize for it Ruler", she replied," No! It's my mistake! As a ruler, I have failed in my duty as overseer, the Greater Holy Grail war wasn't conducted properly and Master of Red summoned a new servant".

" A new servant?!", gasped Claues, Fiore said," But that should be impossible! Every servant has been summoned already!", Jeanne nodded and said, "It should be impossible to summon a new servant, but he abused the fact that he is Ruler and summoned an extra class servant called Avenger".

Mordred nodded and angrily said," That bastard trapped us within his Reality Marble, we were welcomed by the full-powered attacks from Archer and Rider of the Red, other than that air was poisonous, he managed to kill them and I died nearly as well", then she glanced at Poseidon, with a happy smile she patted his back and said," Thankfully, this Mister God saved me in time".

"Is that so Saber?", asked Kairi who suddenly appeared, he was able to hear Mordred's words thankfully due to her loud voice, she moved towards him and said," Oye Master, see? I am fine!", he nodded with a smile and then looked at the Brother and sister duo, Claues said," That means we have lost".

Jeanne felt bad hearing that, they were right though, Yggdmillennia has lost Great Holy Grail War as the remaining servants of Black died, Claues started crying and so did Fiore, Poseidon moved toward Fiore and patted her head, she was surprised, and looked at him, he smiled surprisingly and said," Do not shed tears, he didn't want for you to cry over him", she blushed and nodded.

Poseidon looked at Claues and said," Astolfo and she gave their best for you, do not cry over their death, rather be proud that they were your servants and fulfilled their duties till the last breath", he nodded and rubbed his tears," Thankyou!", Poseidon nodded and then looked at Jeanne and Mordred, his eyes narrowed and he said," Now, it is time to destroy them for once and all".

Jeanne nodded, while Mordred bumped her fists and said," I am all fired up, they will pay with interest for using such a dirty trick against us, especially that bitch", and just like that the final battle was near.

To be continued...

(Author's Note: Fun fact, Poseidon's speed of Ten Mach when he was fighting against Herc was rather calculated than completely random, also I already have made the decision for which timeline he will go next and just let me say that spamming was a bad move on your side)