A/n: Ok from the Title, we can all tell, that Riser is making his appearance within the chapter. Now I'm not doing anything inbetween the end of fallen to now. You'll instantly meet Riser and then get pissed at him. We also meet our future King, one I hope you all be happy with, and learn about our Sacred Gear Abyss Walker. So basically this chapter takes place the day Everyone found out that Rias had a Fiance. Let's do this.

(3 days from previous chapter. My story, my timeline)

After Saving Asia and making sure that she was alright after Rias reincarnated her, you invited her to stay with you, Isami and Raynare. Mittelt stayed with you as well as she didn't trust herself to return back to Azazel without being kidnapped by other rogue fallen. Your parents, did not care in the slightest as they were currently out of the country. (I know they aren't, but in this they are.) Right now, you were currently walking around the nearby park early in the morning.

(Y/n P.O.V)

I sat down infront of the park fountain as I stared at the coin in my hand. I remembered the day it was given to me, and the girl who has been in my heart since she left when we were children.
Y/n: I wonder how you are doing Xenovia. I wonder if you remember the promise we made as children.

I looked at the coin as I started thinking about my life as it is now. Until I felt something off. Standing up, I looked in the direction off the school as I felt that Isami and Asia was there.

Y/n: Why are they at school so early?

I wondered as I felt everyone at school along with two others that I didn't know.

Y/n: I've gotta check this out.

Standing up, I rushed towards the school in hopes of figuring out what was going on.

(Kuoh Academy. ORC room)

I had made it too the ORC room but couldn't get in. Using an ability of my sacred gear, I found out that a magic seal had been placed on the door keeping people out. Focusing my abilities, I found Isami was with the peerage as they were across from the others. Gathering my energy into my left hand, I watched as it changed into the form it took on when we battled the fallen to save Asia. The Abyss gathered around as I balled me hand into a fist and it grew in size. Backing away I pulled my left hand back. Throwing my weight forward to send myself at my fist though the door. Breaking down the door, I walked into the room as my arm returned to normal and I looked and saw a man standing next to my sister as she backed away scared I moved over in front of both her and Rias as the man stepped back.

Y/n: Are you ok Rias, Nee-chan?

Rias: I'm fine.

Isami: Nii-sama I'm fine. Though I want to hurt this asshole.

Y/n: Why?

I asked confused as I saw a two beautiful women, one a grown woman while the other was a teen around my age, dressed in french maid's outfits as the younger one walked forwards before adressing me.

???: Who are you and why did you interupt this meeting.

Y/n: I'm Isami's brother Y/n L/n. Before we get onto why I'm here. Who are you, and can you tell me why my sister is pissed.

???: I'm a maid who follows after my senior Grayfia Lucifuge.

I heard her say as I looked over to the grown woman. I blushed slightly at the womans looks as she was easily a goddess in the opinion of others. Looking back at the teenage girl, I had to admit, she was beautiful and in my opinion, matched both Rias and Akeno in terms of beauty.

Y/n: Ok, so you told me who she is, but not who you are or why Isami is pissed.

???: I am Kirumi Tojo. A loyal maid to the house of Lucifer. And the reason that your sister may be pissed as you put it, is because Riser Phenex said that once he and Rias are wed, that she would be his personal slave as well.

Before Kirumi could continue what she said, my arm changed as it grabbed the so called Riser and slammed him into the wall as I pulled my sword out only to have it stopped by a woman wielding one of her own.

Y/n: Get out of the way! Or else I'll destroy you along with this blonde haired basterd!

I shouted as my grip on the man tightend until it exploded completely in a ball of fire. The fire that engulfed my hand spread up my arm before exploding and sending me into the wall behind Rias as half my arm was missing. I pushed myself up to my feet as my arm regrew completely as the skin on the left side of my face turned light grey as black vein like markings appeared as my horn grew with my eyes becoming a blood red.

Before we could do anything, an ice wall appeared as I turned and saw the older woman, Grayfia as I recalled Kirumi saying her name, staring at us with a light glare as Kirumi had knives in her hands. Kirumi stood in front of me before looking over my body to check if I had any wounds while Grayfia explained that there would be a fight between Rias and Riser with me being part of Team Rias for it and that we would have a weeks preparation.

I watched as Riser had a group of women with him before they all disappeared. I looked down in anger as the changes disappeared and I could see burn markings on my left arm. Kirumi took my arm and started to bandage it.

Grayfia was watching us before a magic circle appeared next to her ear.

Grayfia: Hey, it's me. I've found something that might interest you.

???: Really how?

Grayfia: A person touched by the Abyss. I'll be sending him and his group to that place. Meet him there.

???: Thank you for bringing this to my attention. Goodbye,

Once the person on the other side hung up, she turned to us and informed us that Kirumi would stay and watch over our training and that there was a special place in the underworld where we could train. Everyone nodded as Kirumi placed a marking on my hand to allow me to pass into the underworld without a problem.

Before I knew it, we were all transported to the underworld. I looked around as the area looked like a normal suburban area. Though I watched as everyone followed after Grayfia. Doing the same I watched as we came to an old building that looked like a library. I heard a gasp and saw a girl dressed in a magical girls outfit looking towards us. (Refer to info chapter for looks)

???: Hello everyone.

I turned to Rias with a confused expression.

Rias: This is one of the four Mao. Serafall Leviathan. Or Levia-tan as she makes most people call her.

Serafall: Hello everyone it's nice to meet all of you. If you would follow me I would like to show you a place where you can all train.

She walked off with everyone following closely while she chatted with Grayfia and pulled out a book. I noticed we all stopped at a cliff overlooking a dense forest. Serafall turned to us with a smile as she looked at me.

Serafall: Mister Abyss Walker. I have something for you.

Y/n: For me?

I asked as she walked over and placed the book in my hand. I noticed a magic circle appear under us before we vanished to the surprise of the others.

Rias: Grayfia, where did Serafall-sama take Y/n?

Grayfia: To a place where only he can enter. Kirumi. Follow after them of you can. And make sure to save enough energy to heal the boy after.

Kirumi: Yes Milady.

(With Y/n and Serafall)

We appeared inside a broken tower at the top of a stairwell leading down to a deep dark abyss with no bottom.

Serafall: Welcome to the Abyss Y/n.

Y/n; I thought my Sacred Gear held the abyss?

Serafall: No, it holds but a mere small fragment of the Abyss. I brought you here, so that you could train and learn how to harness you abilities. This stairwell is the only way to enter the Abyss Y/n. I believe the closer you are to it, the more you'll learn. Inside that book, are notes left by two people. Others who held the title Abyss Walker. I believe that you may meet them and learn from them how to harness the Abyss to make yourself stronger. Good luck.

I heard her say as I moved to the edge of the stairwell and stared deep into the dark abyss. Turning back towards her I saw her have a slightly upset look.

Y/n: What's wrong Ms Leviathan?

Serafall: Nothing, just Riser.

Y/n: What did he do?

Serafall: He wants my little sister to be a sex slave like Rias once he marries her. I don't want that for my little sister. And only a devil could stop it.

Y/n thoughts: Only a devil huh. Xenovia I'm sorry, I may have to break my promise. For Rias, Isami and the others.

Y/n: Serafall-sama, after I return from the Abyss, I want you to make me into a devil. I will protect everyone. Even if it means that I would become something I never wanted. I can't allow them to become a toy to that basterd. Thank you for showing me this.

I said as I walked off the edge of the stairwell and started to plummet deep into the abyss.

As I was falling I had a strange feeling that I would find ground. Landing on my feet, I looked around until I saw a bonfire in the distance, moving to it, I sat down and closed my eyes as I let the fire embrace me.

(Inside The Sacred Gear)

I opened myself to see that I was in an area with nothing but ash and spikes juttering from the ground. Hearing two voices, I looked around and saw two men sitting next to a bonfire, both wielding the same blade, and the same armour as me. Walking over to them I saw them stop as they turned to me. One was not wearing a helmet revealing his silver hair and blue eyes to the world. While the other hid everything from view.

Silver haired man: Ah so your the new Abyss Walker.

Knight: For thou to enter our domain, you must be truly pure.

Y/n: Who are you two?

Knight: I am the one to have originally have the title Abyss Walker. Artorias the Wolf Knight. Or Artorias of the Abyss as I became.

Silver haired man: I was the second to wield the title Abyss Walker. I earned the name after defeating the corrupt version of our Friend Artorias here. The names Dante. (My DS created Character)

Y/n: Where am I?

Dante: Haven't figured it out have you.

Artorias: This area is the representation of the Abyss Walkers final area of life.

Dante: Only two Abyss walkers have existed before you. This place changes depending on the area in which the Last Abyss Walker called home. When I defeated Artorias, it was a fighting arena. A colliseum if you will. Then when I died and I found Artorias, it was here, the area of my most foolish mistake and my greatest Sacrifice.

Y/n: What do you mean?

Artorias: When an Abyss Walker dies, a piece of his soul is tethered to the area he died. I died, when Dante bested me in one on one battle. And he died to fufil a prophecy.

Y/n: A prophecy?

Dante: Back in my time I was the being destined to rekindle the world, once I had finished that though my life was over, by rekindling the bonfire in front of us, I didn't realise that I would sacrifice my life to it.

Y/n: What about you?

I asked turning to Artorias.

Artorias: I failed my duty, to stop the abyss before it could consume the world. I died trying to stop it. In doing such I was enveloped by something described as pure horror. My shield and bones may have been broken that day, but my will was not. I saved those closest to me. My selfish whims may have gone unsatisfied, but my will alone was not enough.

I heard him speak as both he and Dante looked up.

I followed their gaze to see a demonic statue. It's horns and arms reminded me of my own when I use my Sacred gear.

Dante: That is the pure horror that Artorias spoke of. The true manifestation of your gears power.

Y/n: I'll become that thing.

Artorias: No. Not while Dante and I are here. We are part of your sacred gear as well. We will not allow you to become like that. We are the guardians of then Abyss Walker.

Dante: We will teach you how to overtake the abyss and how to access your Balance Breaker.

Y/n: Thank you both.

Artorias: It is ok. Now leave we must prepare the area for when we train you.

When he said that, I saw a bright flash before I found myself laying my head on Serafall's lap.

Serafall: Welcome back.

Y/n: Serafall? How?

Serafall: I don't know. You just appeared in a bright flash half an hour ago.

Y/n: If I become a devil, how much stronger will I become.

Serafall: Enough to protect everyone you care about.

I closed my eyes and opened them to see her holding the second strongest piece within a chess set.

Y/n: The queen.

Serafall; With this I can make you into a devil that can easily outmatch Riser. But only if you want to.

Y/n: Do it. With this power, I will save everyone and protect those close to me. And, I will conquer the Abyss no matter what.

Serafall: Thank you Y/n. I promise that I will try to make you happy.

Y/n: Thank you....my king.

(End)

A/n: Ok so was that a bit interesting or what. Your now the queen of Serafall's peerage and will probably get your own later own. Not only that but you finally met the spirits of you gear and now have a proper reason to kick Riser's ass badly. And note the Dante and artorias wont have any major interaction with the story. Only there for your sacred gears spirit. See you guys later.