The scene start to show issei blocking every strike from kiba sword while still standing.

Issei:is that your best to fight me?*raise an eyebrow*because it look weak to me*blocking another strike*

Yumi:*Get insult* I CAN STILL WIN AGAINST YOU*determination*

Issei:*sigh* I got tired of this bullcrap by you *serious abit*

He push her back away from him. Issei raise above his sword. Now he fucking serious abit about it, he swing down his sword as a powerful wind pressure went to kiba aside. It create a straight path to the moutain as issei look Yumi with no emotion on his eyes.

Yumi slowly look back with a terrified expression. The moutain in was slice in half. If that attack actually hit her, she will be dead at the any moment.

Issei: you can't even beat me in a single battle*cold tone* even you try to use your so call 'sacred gear'.....it won't work against me

He slowly walk toward Yumi with menace aura cover the area. He point destiny wrath in sword mode pointing at Yumi throat.

Issei: because I can kill you at any point of time,Kiba

Time skip brought you by chibi author doing homework with his broken brain

Issei was at his apartment, doing homework. After training Kiba, she was almost able to defeat issei at 5% of his power.

Issei:( Now, Yumi can able to defeat that idiots bitch)

He was solving his math problem meanwhile in rating game, they are losing right now and sooner issei will be next lord of disappointment after knowing his training was useless.

It was already night outside. Issei done his homework then went into his bed for sleep but a magic circuit appear in his room as when issei immediately sat up.

Issei: ( what now....)*come off the bed*

Grayfia Would appear inside his room. Issei just look at the woman with glare as he then summons 8 phantom infront of her

Issei: give me a reason why I should just attack you at this moment for invading my home.

His voice sound like about to give her many pain promise.Grayfia was surprise that the fact that issei had the nerve to even talk like that to her. She try to releasing some of her pressure to intimidate.

Issei:*raise an eyebrow*( does she even realize the preson standing infront of her?)

However to her surprise, issei then release a pressure equally as big as her

Issei: you think the cheap fear tactic gonna work on someone like me then.........your fucking deadwrong*cold tone*

This actually surprise for her and suddenly another magic circuit portal would appear inside his home, revealing a man with similar red hair that growing to hate. Something with the figure appear as issei as well grayfia look at the man

[sirzech Lucifer]

While issei sense this aura pressures around the red hair man. Infront them was the current Lucifer, Sirzech calmly look around until he see both Issei and Grayfia as two of them staring him. So after a while going through the whole situation, they would eventually see the both of them well as both group actually sitting down on the couch.

Sirzech: issei Noctis,The fallen Knight

Issei:*narrow*you know me?

Sirzech: I heard many thing from you actually from my sister as well as Grayfia

Issei:( i was expecting a fight )

Sirzech:I wish for your assistance, please save my sister and cancel this marriage

Issei:*raise an eyebrow* let guess your sister lose

Sirzech: that's the reason why I need you to save my sister

Issei: alright, I will save your sister but*raise index finger up*

Sirzech: but what?

Issei: but in one condition

Sirzech: what is your condition

Issei: my condition I will not be your race

Sirzech:.........I accept your condition

Issei:Good

Scene change to riser marriage. Everyone was there even rias peerage was there to watch to their president and riser's sister, ravel state to everyone with overconfident about their clan healing factor and power but if issei was here, he would laugh at their face right no-wait nevermind

Our protagonist break the door with just a kick. his hand was holding a guard. Every noble devil stare at uninvited guest.

Issei: did I come late

Yumi:(issei....)

Riser:*point at issei*Oi! How dare you break in-

Issei: why don't i introduce myself before turn into a rude guest? The name's issei Noctis

Riser:Tch! Seize him!

The guard instant appear around him but they don't know the preson infront of them was The fallen knight

Yumi: we need to help hi-

In 0'oo'00'01, the guard suddenly feel something hit through their chest as they immediately knock out. Everyone was suprise at the uninvited guest

Issei: it seem like your guard was too slow for me*mock*

Noble devil: what is happening?(it was too fast!)

Sirzech:*step* a little entertainment I prepared.

Rias:*surprise*Oni-sama!

Riser: sirzech-sama,what do you mean by entertain!?

Sirzech: riser, the rating was very interesting to watch. However, against my sister who was inexperienced and had half the pieces, it was a bit...

Riser: you have complaints about the fight?

Sirzech:Not at all. The rating game itself would become meaningless if I did. Not to mention, considering the circumstance involved this time, my old family would be dishonored. I wanted something flashy for my little sister engagement party. Right issei or should I say the fallen knight.

Everyone was gasp, shocked from their face except akeno,,Yumi, rias

Issac: I know rumor are always fake but now.......I speechless

Sirzech: I wanted to see for myself the power of the fallen knight. So I had made a contract with him.

Riser:I see. So basically...

Sirzech: fallen knight versus Phoenix. That would make the exciting, would it?

Issei: sure whatever*roll eye*

Rias:Issei, don't!

Issei: do I look care to you?*raise an eyebrow*

Riser:*standing infront of rias* you'll be my last flame before I settle as a married man

Issei: good because I like to become a single in my life.

Scene change to somewhere. Issei stand on ground rub his eye,composed himself as when riser stand on top a giant chess piece statue

Issei: let just start our battle

Riser: I'll show you the power of the Phoenix clan!*spread flame wing and float*

______________________

FALLEN KNIGHT VS KFC RIPOFF

OUR BATTLE WILL BEGAN IN
3!!

Issei summon 3 phantom weapon

2!!

Every noble devil was watching their battle

1!!

Both of them rush

Destroy or survive!!

Issei send his weapon toward riser. The Phoenix quickly dodge to aside as mental baseball bat glowing behind and issei replace his weapon place. He use his hammer slam riser to the ground

Dragger of knight was ground as it already was there before issei appear behind riser. The Phoenix was flying toward the dragger standing place as issei took his dragger place. In that moment, he summon mental of baseball bat and strike riser to aside to giant chess pieces statue.

Issei: is that all?*release the weapon from grip*

Riser:*slowly walk out*don't be arrogance soon, annoying brat!

Issei:yeah, annoying brat alway say that.

Riser:*more pissed than before* I will show you our clan gallant hellfire of the Phoenix, the firebird, the immortal bird!

Issei:*deadpan*firebird? That sound dumb

Riser body release a powerful infernal flame, envelop his body in flame as the Phoenix fly straight toward issei.

Riser: you'll be incinerated!*fly toward issei*

Issei: keep dreaming about that dumbass!*hand cover in yellow, white aura*

Their attack impact into each other as they create a shockwave.

Issei was sent flying into the chess piece statues as well as riser. Issei slid back a far away. Riser slide back a little with his mouth cough out blood

Riser:( what did bastard do to me!)

Issei: it seem like you can handle me at 1%

Riser:(WHAT!? All this time he just use 1%!!)

Issei: I guess that was your best*hollow tone* after all, you are nothing but*appear infront riser and grab the Phoenix neck*a brat, that need to be taught by a lesson.

Riser was too terrified about this, feeling grip was more stronger than before. Nothing can stop him from killing. Issei lifting riser up as he summon 6 phantom weapon from aura glass, material

Issei: say goodbye to your life, riser Phoenix..........

Jaune phantom weapon pierce throught riser body. Issei release his grip as riser body fall into the ground. The Phoenix body was bleeding as issei look down at riser. Issei phantom weapon disappear in glass

The winner is FALLEN KNIGHT

Ravel: ONI SAMA!!*come out from magic circuit*

Issei notices the area start to break apart as ravel take her brother and fly above. Issei falling from the sky, his heartbeat was beating faster, the time around him slow down, the memory of him start show something.

18year old, that was his first time meet Yuichiro in injure,wound by Grimm. After killing that beast he adopt Yuichiro as his son.

19 year old, the last time Jaune saw his son was when he hold his son on arm. There is only one option for him now.

Issei:( I guess i have no other choice than this choice)

Issei form jet sword on under his feet and active the jet and fly to sirzech

\Author: Man! I miss Alfa right now😞/

Chapter end

Authour left note:
-I know this was rush and confuse chapter because I did miss some detail in my story