After getting back, my life gone back to normal except for Fujimaru who was chosen by the world being drag into semi- singularities(FGO) that rewards him of Servants Or Weapons usable for the incoming fights so our training started everytime he gains something new so that he can get acclimate to it along with telling the events that happened making Mash join our sessions, retraining my technique skills(FF Universe) as some of the magic system was not usable here even with the help of my Buddy (system) so it was a half hard to cast it especially the main protagonist skills that combines tech and skills.

Now on our third main Singularity which was Old london we gathered for debriefing on the data they collected along with planning who will join with us three(me, Fujimaru, Mash) permanent members getting Alcides for range and Assasin who we call Serenity as the Information gatherer as we need to be stealthly when doing it, so with the team ready we jump to the new singularity as fog greeted us so the mission begins as Serenity split of to gather information along with me as the task is to much for one person to handle so with fate as the give landed me into the clock tower which was empty of people strange i search for survivors finding none but with it having a library that i read from the data in Chaldea made my way there then with the systems function of Archive made the books float into rows as an orb like substance dislodged in me that scanned it while i read those interesting like grimoire as that will take long for scanning so the system prioritized the easy ones first as they are more in ratio.

As the system was scanning i heard a voice calling

'Come to me' leaving the the library and going into the vault with many locks, asking the system in helping may slow his progress so i used a more physical one summoning Casters beloved dagger swing it to motion cutting all the seals and barrier leaving the physical ones intact so brute force was needed in the second part opening it i observe close all the treasures(jewel, money, etc) but with it not my priority move on searching for it, passing by relic items (summon) made me pause to think if i can give it to Fujimaru who will be so glad but his Journey will be smooth sailing making the experience and lesson along the way obsolete so going 50-50 took it and will only use it when i sense danger like the first one, done ransacking the relics i move forward nearing the two last vault bigger than the others with familiar names Barthomeloi and Kischur Schweinorg so with time to waste disable both safety measures gaining entrance search first vault first finding more books and notes along with a slimy silver that felt useful leaving only the treasures(jewel, money, etc)done with it gone into the second which was a little tricky from the design which may give Zelretch an applause from Caster but with her dagger in hand they were taken down easily, getting in found many wacky items that with the system half finished assisted me in sorting out useful for me and tradable for the future which was three wands, two necklace, earings, a deck of cards and many miscellaneous, almost spot clean i search for that one that called to me making me go infront a sealed box, trying to open it was hard as the restriction was over the top from my scanning that without the key it will self destruct taking the clock with it from the notes near it with an emoji of an old man bonking its head with a fist.

Out of ideas touch the box to take with me when a voice was heard

'Scanning code...Access Granted...Welcome Shirou Emiya U25th'

Then the box opened with letters inside along with an orb releasing Dangerous aura (Green), taking all of it another voice appeared.

'Hellooo, is this thing on?, oh ok anyway welcome Shirou to my Vault if i am not around then this world is in the brink of destruction as i have the ability to intervene making me the first line of defense here so the second is now active when it go into the third and forth then the powerful ones will cut this from the timeline vanishing it into dust to not infect the others, enough with that one, i leave this message to invite you into another world if you want as the uniqueness of your birth pique my interest from the information i gain from your colleagues who is with me now don't worry oh they say hello too but is busy with my task for them, where was i oh yes you were the 25th unique being i encounter not counting those that been repeated so i love to learn all that make you tick so if we cross path say hi(with a smirk), thats all i will say oh keep the orb safe else another catastrophe happens, goodbye'

Zelretch said in the transmission then it combust into a confetti to my face with laughter echoing, with a smile on my face knowing the three was safe i go out to join the team.

Near joining them some Architectures exploded near me making me encounter enemies of different kinds but joined the team to finish them off, going back to their base we plan our next action with the theory enthusiast explaining the grails true calling, then we split into two groups first find the fog maker (Fujimaru and others)and the second( Serenity, me, Arcides) for where the demonic energy is being release taking us to a part where a person is waiting, Introducing himself as Makiri who i know from my time as the old man summoning one of the Demon gods Barbatos making us fight its vessel form and defeating it but i know from my fight with Lev that they have infinite lives so i stand Guard as the other party Approach not to alert it.

Then Makiri with his dying breath summoned Nikola Tesla who used the lightning to interfere with our progress but the lightning also summoned two new allies making the situation shift into our side by Gintoki's hand destroyed the demon fog taking away the shield of Nikolas who we approach was too late as he activated his NP but with its countdown was defeated but some fog still lingers gathering into a twisted self of Lancer making us fight her again.

Nearing our time here the big boss appeared mocking us with his presence that made some of the servants almost shift out, then it look towards me with pokerface

'Even with the interferance of Order(Alaya) will not stop what is coming as this is the true end of Humanity'

Then the battle begins as the servants was defeated and the others tired from the clash while the enemy was getting bored so with my skill takes us to my domain as they Shift back into Chaldea

Now in my Reality Marble

'You sacrifice yourself for them, Pitiful but i will grant you kindness by killing you painlessly'

Angra using all his reserve help me fought him off as he deflected it all effortlessly so with all my strength pull all the energy inside me breaking my limit everytime i near death making him interested in the first half

'This is going knowhere goodbye bug'

He said Casting a magical skill near the level of a semi anti world so with closed eyes used my lifeforce to summoned my two remaining NP

Final Journey and Hand of Destruction that i continuously pump up magic as the doppelganger distract him, as the last hit i final damaged him but this only angered him from the tone but confusion in his face, bleeding i tried Avengers Np healing me but no damage to him

'This is your last stand Goodbye insect'

As the countdown of death happened something burst out of me into him, injured he retreated taking the scene of something getting out of me as a mud person appeared, looking at the close eyed body a devilish smirk appeared then stabilizing it form into a dark figure

'I thank you for weakening the seal how i long for this when he fought with all so that i can take the chance to deal fatal damage to destroy him but this will only take me back as Chaos cannot exist without order else it's just Destruction'.

'Where is my manner I am Alpha(Chaos) the destroyer of world sealed by the Great being Order, corrupted into Serving Shinryuu the serpent of End'

Then two more hands appeared behind it summoning blades as he rush into Solomon negating the protection spell

'Your magic is useless to me as i have Anti Magic attribute(True)made from the combination of many items to make me'

then his sword slash a crescent arc destroying every barrier Solomon made'

With a counter existence infront Solomon banished him but was struck by a fist that took a part of his saint graph

'You cannot defeat me for i am a higher being than you, but i can be Banished so good job thinking it but this is not over Human even if i go back he will finish you'

The dark being said with a laugh as we were absorb into the Crack made by Solomons magic before closing many heads of Dragons appeared in the crack making Solomon Nervous as the entities aura was greater than him but was absorb inside the closing it, done here Solomon revise his plan as that thing might appear again.

Inside the crack the Dark being was bitten by the dragons exiting my stomach with no remorse in his face and was absorbed inside after that a crystal appeared in my forehead (Diamond) and chest (ball) vanishing after leaving me in Oblivion but protected as an aura appeared shielding me

Mind space

I see a Person dealing with many others to gathering components for something, in many year of searching he finally found the final piece a Huge Dark crystal Emitting Chaotic energy so he draw a circle and take out the items which are Four black swords in sealed state, an ordinary arm but has Ancient Dragon aura(you know who clue index) a core of Blue and Green, Arm of Chaos(dissidia), and piece of God Order soul he found after the battle of the Gods.

Down placing them in order the circle shined bright consuming the items into the crystal then it shrunk into a human size that got darker and darker with a sharp claws appearing out of the crystal and the mad laughter of the person echoing in the Cave.

Awaken i was in a grassland with no one near so i walk to search for my comrades

seeing a tower from afar walked into it with Merlin greeting me with eyes of excitement.

'Welcome traveler friend to my humble abode please make yourself at home'

he said with a gesture to one of the seat next to the table, we sat and his face became serious

'Usually I don't welcome the feeling of entity beside you but for this time I will make an exception as the Adventures you have intrigued me'

he said making a cup of tea appeared then sipping it

'then with introduction, my name is Merlin the great, Arch mage(wish) of Britain that trainer Arthur Pendragon and this is the tower in between worlds the Rhongomyriad which was supposed to be taken by Arturia but because of an Anomaly was still here'

he said with mix emotion in face sipping tea after

'So we gather here to talk about the divergence of this timeline which happened because of your arrival'

he said with sarcasm in his tone but I observe him as to listen to all his ramblings for information I need to piece it together.

'so here is what you are gonna do, you take this power and travel to her and give it so that I can go out and pla... see the world'

he said changing the words quickly because of the effect of Avenger skills that make those near him Spoke their true desire.

as he talk and talk I used my sense to find the source of this area making me see a weapon as it's full body pierce underground leaving only the handle, so with enough info(Avenger almost at its limit of patience) walk to it grasping the handle that didn't bulged so using our power pulled it only to see that it was only a handle making me confuse with a Merlin smirking.

'now that you got it let's go back inside to talk about the plan'

he said Gesturing me to sit again then we talk about the plan which he will give me a flower for contact to find the Arturia that resonate with this tower as she needed to complete his destiny else her closure will not happen(stuck in the holy grail war cycle) in exchange he will teach me how to jump between dimension as my power is similar to demonic one he used for travel.

accepting his deal as I need to search for the trio but don't have the kelidoscope magic and this is the only available skill trained it to its limit as the system provide the correction in the errors the magic have, with many days past the parting arrive as Merlin urged me to depart quickly this day so that the search for her will be smaller from the use of his clairvoyance, so I departed as flower flutter from the circle he made to teleport me out, when I vanished he said

' good luck Shirou'

then made his way back to his home

A/N: the story might take small changes to the main timeline(FGO) but he will help them while searching for the Arturia Merlin was assigned oh if you want to see his status I will post it in the next chapters, if you have question about the story some will be answer when some of the FF I post got near their middle as I still can't decide who to prioritize the older ones who was before this Era begun or the New ones who is still in the dark comment a review or PM me for which one.