You already know the deal. Double chapter bois!!! It's time to D-D-D-DUEELL!! (Yugioh reference)

Fun fact 1:
This book was originally going to end at this fight but with the main villain being Trihexa buuut I wanted to add other villains I knew about. I didn't want to be casual and make DxD's final boss the first one so I added some of my own to make this book longer. [I shit you not, this book may come out to atleast 250+ chapters/4 volumes if I leave the future plots as is!!]

Fun fact 2:
I actually cried writing a certain event that will happen in the future. I won't go into spoiling it but I got to say that it hurt writing it but knew I wanted to do. Please look forward to it as much as I enjoyed writing that little part.

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12 Hours until Kama's arrival

Gilgamesh: "Where is he?"

Gilgamesh looks over to Eucliwood who was sitting down eating some yogurt. She looks at him briefly before going back to eating her yogurt.

Gilgamesh: "That is not an answer!!"

He looks at the computer to see a children's show playing.

Gilgamesh: "The hell?! Why is there a sponge in the water?!"

Eu: "Loud"

Gilgamesh: "Do not call me loud!! Gah, I'll just go find him myself"

He heads downstairs as he hears music playing. He sees Y/n punching a boxing bag.

*pick a song for workout scene*

Gilgamesh shoots a sword at the speaker, shutting the music from playing.

Y/n: "You could of turned it down you know"

Gilgamesh: "Why are you still here?"

Y/n: "What are you talking about?"

Gilgamesh: "I had thought you finally left this place yesterday. I was wrong to assume that"

Y/n: "Why, do you need me for something?"

Gilgamesh: "... She'll arrive today. I can't have you exhausted for the battle"

I send the punching bag back into Babylon as I turn to him.

Y/n: "I know"

Gilgamesh: "You are worried. I can see it in your eyes but that doesn't mean you shut yourself away. Come on up and eat already.. and take a shower, you reek of mongrel"

He says while going up.

Y/n: "Thanks father"

I grab a towel and start cleaning the sweat of me. I had said that half jokingly, since he has been like a father figure to me who's also my grandfather... interesting roles.

Y/n: "Time to eat some grub"

I sit down by Eucliwood and pat her head.

Y/n: "Hey there"

Eu: "Hello there"

Y/n: "General Kenobi, you're a bold one"

Gil: "Where's Saber?"

Y/n: "X. She's upstairs with Mordred. Let them be alone for a bit"

Gil: "What is she doing?"

X: "There"

They both come down as Mordred comes in with a beaming smile.

X: "Catch"

X throws a ball at Mordred who catches it.

Mordred: "Look father!! I caught it!!"

X: "Yes, yes. Good job Mordred"

She says while patting her head.

Gil: "Saber"

Mordred walks up to Gilgamesh and hands him the ball.

Mordred: "Mother, Father and I are currently playing ball. Join us!!"

Gil: "I am not your mother!! And I am also not fe-"

X: "Join us"

Gil: "Go for the ball Mordred!!"

He throws it into the living room.

Mordred: "I am not a dog!!"

Gil: "How do you play this then?!"

Mordred: "You throw it at me"

Gil opened Babylon and pulled out another ball and threw it at her. It hits Mordred and I hear an oof.

Mordred: "This is made out of solid gold!!"

Gil: "Of course, cherish it mongrel. It is the fin- Ow!!"

Mordred threw the ball at his knee and went for the ball he threw at the living room.

Gil: "The hell?!"

She came back looking at me confused.

Mordred: "She's a fox right?"

Out from the living room, Akagi came in crawling on all fours with the ball in her mouth. She seductively walked over to me and placed it in my lap as she had a red blush in her face.

Akagi: "Co~Mma~A~N~Der~ would you like to play with this fox~"

Y/n: "God that's so tempting"

Akagi: "Want to do it~?"

Y/n: "Yes"

Amagi comes in and drags Akagi with her over to the other room where multiple beatings were taking place.

Y/n: "What kind of charm was that?!"

I lost myself for a bit there. Fox girls are truly another breed when it comes to charming the other sex.

Gil: "Are you back?"

Y/n: "Yea"

X: "Gilgamesh, I have something to tell you"

Gil: "What is it my Saber? A marriage proposal? I was about to-"

I kick his shin as he holds onto it.

Gil: "You devil child!!"

X: "Try not to die out there"

She looked genuinely worried when she said that. This caught Gilgamesh of guard as he looked away before responding.

Gil: "Yea, I know that"

Y/n: "Tsundere~"

Gil: "Shut it mongrel!!"

He stands up and walks over to her and brings his face over to her.

Gil: "I have to come back. After all, I must take my Saber and make her mine still~"

He says with a cheeky smile before leaving.

Y/n: "Well, we all have something to-"

I stop as I feel a tug at my shirt. I look down to see Kaga with the ball in her mouth in a similar pose as Akagi did earlier.

Kaga: "Uh, I don't know if I'm doing it right. Akagi forced me to do this.. C-Commander, w-will-"

Y/n: "Absolutely!!"

I feel a frying pan hit me over the head as it brings me back to my senses.

Y/n: "Ow!!"

Amagi: "Are you done?"

Y/n: "Yes. Sorry"

She looks over to see Akagi laughing to herself. She noticed her and turned pale.

Amagi: "Aaakagi"

Akagi: "I'm dead"

She runs off as Amagi begins to chase her.

Y/n: "What the hell is happening to my house?"

Kaga: "Everyone is trying to ease the nerves. Everyone is tensed because they know Kama arrives today.. Akagi wants to have sex with you because she loves Commander"

Y/n: "What?!"

Kaga: "She's... She's afraid of losing Commander. She wants to be able to keep something from him if he goes down with her because she believes Commander will win in the end"

Y/n: "..."

Kaga: "She told me she was confident in Commander. She said how happy she was you brought us in and knew you'd beat her the moment you mentioned her"

Y/n: "I don't know if I'll beat her but-"

Kaga: "You will!! I have always trusted in Akagi's instincts. If Akagi says Commander will win.. then Commander will win!!"

Kaga was at the verge of tears as she comes into my arms.

Kaga: "Commander has to win.. he has to come back alive or Kaga will be angry at commander.. don't leave us alone. Kaga will offer you anything you want in exchange for Commander to come back alive"

Y/n: "Everything will be fine"

I rub her head and ears to calm her down.

Kaga: "I don't want to see Akagi sad anymore. That's why Commander has to come back.. Kaga doesn't want to see Commander gone either"

Y/n: "... Then how about a deal?"

Kaga looked up at me as I dried her eyes with my finger.

Y/n: "When I come back from defeating Kama, I'll throw a massive party"

Kaga: "A party?"

Y/n: "Don't you think I forgot it was Kaga's birthday in a few days. I'll come back and throw you the biggest of parties. Food of all kind and all types of fun things to do. At the end, I'll give you whatever gift you wish for"

Kaga: "Whatever.. I wish for?"

Y/n: "Anything. I'll make it happen"

I stick my pinky out and give her a smile.

Y/n: "I promise to do that. I'll pinky promise"

Kaga reaches out to mine with hers and we lock.

Y/n: "With this, I promise to come back"

We let go and I walk over to Eucliwood.

Y/n: "Time to go. I'm sure we could speed up the time by waiting for her there. She hasn't moved from that spot since Tiamat recognized her"

I walk over to the living room and stand in the middle.

Y/n: "Everyone here now!!!"

I wait until everyone arrives and look at them.

Y/n: "I think we've all waited long enough... it's time"

Gilgamesh: "We've still got time til she lands"

Y/n: "I'm done waiting. It's time we set up and give her a welcoming party full of explosions and swords"

I go outside with everyone trailing me and pull out a flare. I aim it at the sky and fire a golden beam into the sky.

Y/n: "It's about time we head over to the spot. Ahri"

Ahri: "As you wish master"

A large magical circle surrounds us and we are taken onto a large plain. It was the furthest point from civilization and gave us the biggest room for waging a war with a goddess.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
At the ORC

After spending the last night together with her peerage, Rias had been waiting anxiously for Y/n's signal.

Issei: "Rias?"

Rias: "I'm happy you got some extra lessons from Y/n before he sent you back... I'm worried about this. Y/n made this battle sound like we are taking on someone of the likes of Trihexa. I'm worried we might not make-"

Issei: "You have nothing to worry about Rias. I'll make sure everyone comes back. I promise"

Rias: "Issei.."

Issei: "You remember the plan right?"

Rias: "Of course. I'll hand over Akeno to him in exchange for Eucliwood. After that, we will be sent to the underworld where my brother, Serafall, Sona and Merlin will be waiting for us to prepare a powerful barrier"

Issei: "We have one shot at this. Let's make it count Rias... after that um.. I'd like to ask you something"

Rias: "What is it? You can tell me now if you'd like"

Issei: "Well... I want to know if you'd um.. take me as your.. man. If I could marry you after all this is done. Would you be fine with me?"

Her eyes widen at Issei's sudden proposal.

Issei: "I want to make it official with you Rias. No more hiding my love anymore. I want you to be mine, to be my wife. I've learned a few things from Y/n in that last day I spent with him"

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Just before Issei leaves the Gilgamesh home

Y/n: "Issei, you remembered that I had something to speak with you right?"

Issei: "O-Of course!!"

Y/n: "Good, follow me to my room"

Issei: "Sure"

It was night time and most of the people had already gone to sleep. I didn't want to disturb them so I brought him over to my room.

Issei: "So what did you want to talk about?"

Y/n: "You understand the severity of the situation ahead of us right?"

Issei: "Fully. I'll bring my A game when-"

Y/n: "I don't want you to focus on that. Not right now"

Issei: "Huh?"

Y/n: "Listen up. Tell me right now, do you lust or love Rias Gremory?"

Issei: "What?! Obviously-"

Y/n: "So if tomorrow she came and she looked like a grandmother, old, wrinkly, and weak to the bone, would you still love her the same?"

Issei: "Huh?"

Y/n: "If she came back without a limb, without her sight or something of that sort. Would you still love her?"

Issei: "Of course I would.. I'd do anything for Rias.. There's not a thing in life I wouldn't sacrifice for her"

Y/n: "Even if it meant your life?"

Issei: ".. Of course!! I'd glad-"

He stops as I slap him across the face. He holds onto it with a confused stare.

Y/n: "You idiot!! You just proved to me that you don't love her at all"

Issei: "W-What, but-"

Y/n: "Are you really that foolish to believe that she wouldn't care if you died?! That she would want you to sacrifice yourself for her sake?! Non sense, it is clear you don't love her as much as you thought"

Issei: "But-"

Y/n: "But nothing!!.. you wish to demonstrate your loyalty to her? To show her how much you care for her?"

Issei: "Yes"

Y/n: "Then remove those thoughts of dying in battle. The thoughts of sacrificing yourself for her sake. You are being selfish in throwing yourself away just like that... Go back to the Gremory home. I've taught you the last lesson I could teach you"

~~~~~~~~~~~~~~~~~~~~~~~~~~
Present

Issei: "Never plan to die. Always come back to those who love and need you"

He looks up at Rias.

Issei: "I promise to come back and marry Rias"

Rias: "Issei.."

A large burst of gold flies up into the sky. They both look at it and take a deep breath.

Rias: "It's time. Akeno!!"

Her peerage appears before her as she looks at them.

Rias: "No matter what happens today. I want you all to know that I love every single one of you. My final command? All of you must come back alive, got it?!"

All: "Yes ma'am!!"

Rias: "Good. Akeno, take everyone except Issei and Myself to the underworld. Us 3 will go to the battlefield"

Akeno: "As you wish Lady Rias"

~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Unknown place

Y/n: "We've arrived"

I look out to see nothing but nature surrounding us.

Y/n: "Fox girls, you know your position"

Akagi: "Of course"

Akagi and Kaga take off to the sea while Amagi and Ahri take off to the highest point in the island.

Tiamat: "Y/n?"

Y/n: "Yes?"

Tiamat gives me a big hug.

Tiamat: "Mama will do her best to beat Kama. Mama won't allow it to head to Plan C"

I pat her head as Mordred and X come behind her.

X: "You're not the only ones that will avoid Plan C from happening. We all will"

Gilgamesh: "Did you forget what I promised Tiamat. I will not fail in my promise"

??: "As will I~"

I turn around to see a familiar face behind me.

Irisviel: "Looks like I've arrived in time to be of help"

Gilgamesh: "Holy Grail vessel? What are you doing here?"

Irisviel: "Irisviel. It appears the King of Heroes doesn't have a good track with remembering names, right X?"

X: "Yes"

Gil: "Quiet you"

Y/n: "What are you doing here Iri? This is-"

Irisviel: "About to be the place where you wage war? I know. I've come to bestow upon you a special skill to your arsenal of weapons"

Y/n: "A skill? But I already-"

I stop as she kissed my forehead.

Irisviel: "I hereby give you a special skill from me. Affections of the Holy Grail. You are now linked to the grail itself"

Y/n: "Thank you"

I say as I touch my forehead.

Irisviel: "A mother has a job to do. I have to protect my child after all"

Behind us, Rias appears with Issei and Akeno behind them.

Y/n: "I take it you had a fun night?"

Issei blushed and looked away as did Rias while Akeno simply put her hands on her cheeks.

Akeno: "You wouldn't believe~"

Rias: "Akeno!!"

Y/n: "Rias"

Rias: "Of course. I hereby offer you my queen, Akeno, for yours, Eucliwood"

Y/n: "I accept"

Our pieces swap as Eucliwood, Alter and Merlin head over to her.

Y/n Alt: "Don't mess it up and die on me kid"

Y/n: "I ain't planning on dying today. I've got everything set up on my end"

Rias: "Good. I'll let my brother know and we'll get started on our part"

Y/n: "Very well.. Who would of thought at the beginning that we'd end up teaming up. I'm proud of your growth. You've definitely matured from that old stuck up girl"

Rias: "You praise me too much.. I'm glad we're getting along now. I'll tell your wife you said hello"

She said before being sent to the underworld by Akeno.

Y/n: "Urgh... Everyone ready? Akeno, head over to the top of the mountain. Ahri and Amagi will be there waiting for you"

Akeno: "As you wish my King"

She says before teleporting away. Mordred was finishing up with her warm ups as X checked out her weapons. Issei was also warming up while his gauntlet began to boost up.

Y/n: "Everything is set. Time to call our guest then?"

Gilgamesh: "Of course. Are YOU ready?"

Gilgamesh looked over at me.

Y/n: "No.. but I have to. *chuckles* I'm confident in our skills"

Gilgamesh: "Of course you should. We are Kings after all. We don't just assemble idiots"

Y/n: "An ego?"

Gilgamesh: "What is a King without an ego?"

Y/n: "A spineless fool who's simply been put in charge of a kingdom"

Gilgamesh laughs as do I. He pats me in the back as I pull out a bow and aim it up. I take out an arrow and pull the string back. I fire the arrow into the sky and wait.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Outside Earth's Atmosphere

Kama had her eyes closed but grabbed the incoming arrow. She looked at it and broke it.

Kama: "So you're ready for your planet's destruction already? Hmph, fine by me"

She slowly begins to descend to the Earth with a sadistic smile.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Unknown Island

Y/n: "She's got my message with that"

Gilgamesh: "Have your little chat with her while I prepare everyone"

Y/n: "You got it"

I look up to see a small light appear. Suddenly, an explosion happened clearing the sky from the clouds. That's when I see her.

Kama: "Y/nnn~? I've arrived"

Y/n: "I can see"

Kama: "I've come to spread my love to the universe. It appears that you're someone who's going to be stopping me"

Y/n: "I am"

Kama: "My? A man of very little words... is this the army you've assembled to stop little old me~?"

Y/n: "Tell me one thing before I kill you, why are you destroying everything?"

Kama: "To spread my love everywhere. I wish to shower all the universe with my love. I am here to destroy the hatred as I did in the future"

Y/n: "So you come from Y/n Alter's timeline?"

Kama: "Yes"

Y/n: "Which means the one that belongs to this-"

Kama: "She hasn't turned bad just yet. Who knows, you might be able to find the little one and make her an ally~?"

Y/n: ".."

Kama: "But I won't let that happen. I'll destroy you and this planet before I go looking for her. Might like to see what would happen if I were to corrupt my younger self~"

Y/n: "I've had enough talking. I hope you're ready, because we are"

Kama: "Very well then, let us fight"

She says while creating some beams from her hands. I step back to my team.

Y/n: "Everyone!! Man up!! At the order of the king, we fight!!"

All: "Yes!!"

Kama and I lock eyes. She sends me a sadistic smile while I match hers with a glare.

Y/n: "FIGHT!!"

Gilgamesh and I unlock Babylon as X brings out both her swords. Mordred unleashes Clarent and charges in behind Tiamat who was the first to rush forward.

Issei: "ASCOLON!!"

The sword appears and Issei brings the rear of the group. Kama simply laughed and simply looked at them as if they were nothing but ants beneath her.

Kama: "Bring it"