3rd Person Pov

The ritual was then finished for Serenity as she was now Y/N's 4th Servant. News about this and Rider's Noble Phantasm was given to Kiritsugu. This caused Kiritsugu to make his next move and which was to move his family and their servants to a new headquarters luckily, Saber is Driving

You: It's a shame that Serenity, the Jeanne Sisters, and Skadi decided to not be here.

Scathatch: Skadi did mention how she didn't like how she had to squeeze with the rest of us so she'll be teleporting to us u til you give her the signal. The Jeanne Sisters say that they can spot us even when far away, so they'll sense us. As for Serenity, you already know why she doesn't want to come in.

You: Right, her poison.

Irisviel: Saber, what does driving feel like?

Artoria: Transportation is nice, makes me envy how today it is more advanced than my time. Irisviel, let me handle the transportation from now on, alright?

Irisviel: Fine

You: Finally, mom isn't driving, and my mental and physical health is now no longer at stake.

Irisviel: You meanie!

Maya was traveling behind them until they arrived at the new house. It was a Japanese Style house, not much inside but it would do for a home and it will be the place for their operations. Maya gives the keys to the house and one of them is to the garden house.

Maiya; It may not be comfortable

You: We can make it work, thanks Maiya

Maiya then leaves as the rest of us went inside. Skadi and Serenity were the first to arrive

Skadi: Yuck, what a disgusting place, it needs some renovations.

You: Agreed. But I'm fine with it. Then why don't you do it, Skadi?

Skadi: Why should I?

You: Ice cream?

Skadi: One renovation coming up

Time skip

After Skadi had finished the renovations, everything was the same except with normal furniture and a cleaner place

You: Much better, didn't think you'd know how to renovate it

Skadi: You should know that all servants gain information about the modern world, human.

You: Right, you're right, here, your ice cream like I promised

Skadi: Thank you~

Musashi: She really likes eating ice cream, huh?

You: Yup. Oh yeah, have Serenity and the Jeanne Sisters arrived?

Scathach: Serenity is about to arrive while the Jeanne sisters are still behind her by a few hours, they should be arriving before night fall

You: Good. (What's taking mom and Artoria so long?)

With Irisviel and Artoria

Artoria and Irisviel would find a room to perform magic and Artoria was curious about why Irisviel wouldn't do anything for the whole day. So, Irisviel holds Artoria's hand with all her might

Irisviel: I'm not joking... this is all the strength I can muster... I even have trouble changing clothes.

Artoria asks what was happening to her but Irisviel tells her that she isn't a normal human, to begin with and that a doctor wouldn't do anything

Irisviel: I'll be needing your assistance from now on, my knight. Also, keep my son away from this secret... I want to die seeing him with a smile, not sad over me...

Artoria: I will, it is my fault, to begin with.

Artoria walks out and into the house where she sees Y/N waiting for her

You: Is it okay if we talk?

Artoria: I have time, what is it?

You: ... I'm sorry

Artoria: For what?

You; For calling you a fake king, I wasn't myself back there. Don't worry, Gilgamesh didn't spike my drink, I was speaking without thinking

Artoria: It's okay, really. After you said that... I realize that... I'm really not a king, I'm just someone selfish enough to follow my dreams

Y/N hugs Artoria tightly as she hugs her back. They then walked out as they hear someone

???: OH NO!!! I'M GOING TO HIT HIM!!!

A butt then hits Y/N in the face and a huge explosion happened which alerted all the servants and Irisviel.

You: AHBLURGH!!

Artoria: Y/N, are you okay?!

Skadi: An enemy?!

???: Owie... that hurt, luckily a cushion saved my fall

You: Domo, Cushion desu. (Hello, I'm the cushion)

The mysterious woman then blushed a little before kicking Y/N into Scathach

You: Nice catch

Scathach; No problem

You: Can you NOT, hurt me?!

Ishtar: Sorry. Oh right, I forgot to introduce myself. I am Ishtar, Goddess of Beauty and Governor of Venus, and part of the Archer Class. Fear me and do your best to satisfy me with tribute and reverence!

You: And the sister of Ereshkigal, the Queen of the underworld, correct?

Ishtar: That's correct, you sure know your stuff

You: Thanks I guess? So, what are you doing here?

Ishtar: Huh? I was told that the servant who took in multiple servants was here, so I came right here, was I wrong?

You: No, you came to the right place. Because I am the master, the one who cushioned your fall from heaven itself

Ishtar: ...

5 seconds later...

Ishtar: EEEHH??? You?! You're the master?! But you're so young!

You: I get that, a lot. From Musashi, Jeanne, Jeanne Alter, uh... I don't know anymore...

Ishtar: I-I see...

You: You look like someone I know, my fiancé, Rin Tohsaka, you know who she is?

Ishtar: How should I know that? I have no knowledge of that person

You: I see. Where's your sister?

Ishtar: You're more interested in her than me?! You should be glad that I came here to become your servant!

You: I already have a Saber, Lancer, Assassin, and a caster, I don't think I'd want to have another thank you. Besides, I think your sister would be nicer to me for stopping her fall instead of trying to kill me

Ishtar: I said I was sorry alright?!

You: Says the Goddess that was blinded by jewels

Ishtar: What did you say?! I'll blast you into next week! Also, speaking about my sister, she should arrive about... now

Just from the sky, another body was launched at Y/N as a pair of cheeks hit his face as he slides onto the ground

Irisviel: (Is this what they call, Emiya's curse?)

Ereshkigal: AH! I'm so sorry!

Ereshkigal gets off Y/N as she picks him up and heals his wounds

Artoria: Y/N, are you okay?

You: I'll survive... maybe.

Ereshkigal: Are you okay? Sorry that I hit you.

You: It's fine, your sister made me used to it

Ishtar: Hey!

Ereshkigal: I-I see. Anyways, Servant, Lancer-class. Ereshkigal, Mistress of the Underworld.
I have come in answer to your summons.
I don't like to help a single person exclusively, but I'll help you out since you summoned me. You should be grateful.

You: I don't mind having you with me

Ishtar: Then what about me?!

You: You're not needed

Ishtar: (GANG!!)

Musashi: Ooh, master with the sudden rejection!

You: Kidding, I won't waste this chance on letting you get with another master. (Besides, my mom wants as many grandchildren as possible so it's hard to reject when she's staring at you)

Irisviel; (I raised that kid well.)

After Y/N had performed the ritual, Serenity arrived just in time

Serenity; Master, I'm here.

You: Ah, you've arrived just on time, Serenity, good job on finding your way here.

Serenity; Thank you, Master. I also tracked down Caster. He and his master will be going towards the stream later tonight

You: Then we'll go there later. Scathach, Serenity, tell the Jeanne sisters that Caster will be at said location

Serenity/Scathach: Understood

The 2 then dispersed as Y/N performs the ritual on the 2 goddesses

Ishtar: Question, is Gilgamesh here?

You: As an Archer and a female

Ishtar: Great... also, who's the caster that you are talking about?

You: Gilles Des Rais, from French Mythology. I hope you're not as useless as what they say in the myths

Ereshkigal: Pft, burn.

Ishtar: Hah?!?! I graced you with me presence and yet you call me useless?!

Ereshkigal: I mean, he isn't wrong, the last time we fought together, you were needed to being something but you forgot where you placed it.

Ishtar: THAT WAS ONE TIME!!! I DIDN'T DO IT AGAIN!!!

You: You did

Ishtar: Why you little!

Musashi draws her sword while Skadi draws her wand

Musashi: Don't even think about hurting my master

Skadi: I wonder if I should kill you too~

Time skip

As night fell, Skadi teleported all of them to the scene where they saw Gilles casting a spell that is using huge amounts of mana

Gilles: Holy Virgin, welcome!

Jalter: Ugh... I want to kill him now.

Gilles: I'm sorry, Jeanne. Enjoy yourselves to the fullest!

Gilles then summoned a monster bigger than anything in the world

You: Chutulu?!

Alexander: Y/N!

You: Alexander?!

Alexander; Tonight, we call a truce, we can't fight with that thing here. Nice to see you again, Assassin

Serenity: Nice to see you again

Jeanne: Yes and because Caster has broken the laws of the Holy Grail War, the more damage he does, the more that the Secret of the War being kept as a secret will be tarnished!

Scathach: We know. Where's Diarmuid, Rider?

Alexander: I talked to the other servants, Lancer has agreed and he'll be here in a while.

Artoria: Got it, we'll fight together.

Waver: Einzbern, you fought against Caster before, how can we defeat him?

Irisviel: We need to defeat him as quick as possible

You; That should be easy. Looking right now, we have 12 servants. If we're lucky, Gilgamesh will appear

Artoria: She'll most likely come if you're here.

You: Although we can expect her to be fighting Berserker.

Diarmuid arrives

Diarmuid: As long as we can defeat him, it'll be fine. My Gae Dearg will be able to destroy it in one strike with ease.

Artoria: Lancer, can you point your spears to his Noble Phantasm from the shore

Diarmuid: That won't he an issue if I can see it.

You: If that's the case, Artoria, Diarmuid, Scathach, Alexander, Musashi, Serenity, and I will take the vanguard. Skadi, Ishtar, and Ereeshkigal, take the chance to fight with ease from the back lines while we distract the tentacles from reaching you. Jalter, Jeanne, can you?

Jalter: Of course

Jeanne: I am not allowed to fight in the Grail War because of my class. However, this is something punishable, so I will

You; Good, you're coming with the vanguard.

Alexander: I'm fine with that. However, Saber, how are you going to attack?

You: That's right, the wound from the cursed spear.

Artoria: My body is protected from the goddess of the river, I won't be harmed regardless of the depth of the water

Alexander: What a rare ability. Alright, let's do this!

You: Yeah, Siegfried!

Irisviel: Be careful, Y/N

You: I will. Let's go!

Servants: Yeah!

With their combined strength, they should have been able to defeat a beast like that. However, the monster had more than just a menacing and strong force, it had fast regeneration, meaning even if one part were to fall, the rest would regenerate

Scathach: Gae Bolg, Alternative!

Scathach throws her spear as it splits into multiple ones, hitting different targets.

Skadi: O Power that is tied to my name, answer me and open the gates, come my castle, the castle of shadows, Gate of Skye!

A portal opened above everyone as it boosted the strengths of each of Skadi's comrades. However, it didn't matter, as long as Gilles regenerates, nothing would work. So, they went back to phase one while Skadi, Ereshkigal, and Ishtar kept it busy

You: So what now? That thing will keep regenerating even if we give it all we got

Artoria: I... don't know

You: ... Very well, so it has come to this. I'll buy you 20 minutes, but that's all you get, now go!

Artoria: Y/N!!

Y/N went back to battle as he slashed the tentacles of the monsters

You: Commence transformation, a pilgrimage towards the beyond

Y/N jumps into the air as he turns into a black dragon

You: I am the Evil Dragon that holds the grail of heaven. Disintegrate my enemy, Akafiloga All-Grio!

Gilgamesh watches as she sees Y/N turn into a dragon before blowing fire from his mouth

Gilgamesh: Oh? So that's his Noble Phantasm, impressive, my chosen, subarashi~

However, due to his big size, Y/N's wings were captured by the monster

You: GILGAMESH!!!

Gilgamesh: You dare touch what is mine?!

Gilgamesh opens a portal as it summons multiple swords, destroying the monster's tentacles, letting Y/N go.

You: Thank you.

Gilgamesh: Don't thank me yet, that's all the help you'll get huh? Mad dog, welcome to the party! I have work to, see you later sweetie~

Y/N keeps his guard up as he sees that the monster had eyes, which was able to see a jet and eat it and the person inside. Kiritsugu then saw Y/N in his dragon form

Kiritsugu: Y/N?! He has unlocked his Noble Phantasm huh?

He called on Irisviel, telling her that Artoria needed to use her Noble Phantasm but to do that, Diarmuid had to destroy his cursed spear. By the time they discussed that out, Skadi, Ishtar, and Ereshkigal ran out of mana and couldn't fight anymore. After a while, the fighting stopped for a while since Kiritsugu killed Caster's master

Gilles: I see, this show is for you, Ryunosuke!

Since Gilgamesh was busy, Y/N ran out of mana and thus, his flames got weaker as he was captured again.

Artoria: Y/N!!

Jalter: Back off! I'll do it! This is the roar of my soul tuned by abomination, La Grondument Du Haine!

Flames spread across the water as it burned Gilles before swords stabbed him, letting go if Y/N. However, just before Y/N could fly away, Gilles grabbed onto his wings

Gilles: THIS IS FOR YOU, MY HOLY VIRGIN!!!

Jalter: Shit, he isn't letting go!

Irisviel: My baby! Can't you all do something?!

Scathach: We can't get near that thing if we can't even destroy a single tentacle!

Ereshkigal: Says you, us ranged servants are of mana!

Irisviel: Y/N!!!

???/???: Clarent Blood Arthur!/Caliburn!

2 sword beams slashed the monster as it was pushed back as someone takes Y/N's body as it turned back, bringing it back to the group

???: Oi oi, you guys should have been able to take this shit down, but you are just as useless as before, FATHER!

???: Hey, Mordred that's enough, we should take care of this boy first, he's injured. Don't worry miss, he'll be fine

Irisviel: Oh thank you! My sweet child! Huh? Artoria?

Artoria Lily: Ahah, right, I am Artoria, her younger version, Artoria Lily

Mordred: I am Mordred Pendragon, HER SON!

Artoria: Mordred...