Y/N POV
Well this is kind of a shitty situation Serafall how to go check out some suspicious looking space ship while I'm stuck watching Sona and her peerage hold a barrier while the 2 exorcist inside try to handle Kokabiel. I'm bored... I'll just go in and kill him myself.

Serafall POV
After killing a bunch of aliens and tricking some guy into telling me where their leader was I shoot open a huge door with a blast of magic and walk in there is some dumb looking blue guy sitting on a throne. Wait... it's 2019 pretty sure that's racist

"Uh... do you come in peace alien man?" I ask he then stands up

"Before we fight let us exchange names... I lead the space pirate group known as Dark Matter, I am the dominator of the universe Lord Boros" he said

"Oh... I'm Serafall Leviathan the strongest of the 4 devil kings and professional magical girl!" I said while posing "Now look I don't know why you came here but if it's a fight you want you better leave before I have to kill you." I tell him seriously

He starts walking forward down the stairs "There exists a prophesy. I once travelled the universe destroying everything in sight. But I was too strong and couldn't find a challenge, no body alive was strong enough to face me. I was bored out of my mind until one day a seer told me a being exist that can be my equal and match my power to reignite my passion fighting" he stops in front of me "that was 20 years ago... Do you know how long I travelled in order to get here? My men mocked me saying the prophesy was a lie just to get me away fron the area. Now I am certain" he smiles "Give me meaning to my-" I punch him and goes flying into a pillar

"Sorry I'm not even the strongest one on this planet... But if you want to get to my Y/N you're going to have to go through me!" He pulls himself out of the wall and... his clothes break off?

"This set of armor was made to seal my immeasurable power has been broken..." he says

"And?" I ask

Various parts of his body starts glowinv and his skin starts changing color

He charges at me and I block it sending me through multiple pillars he comes rushing at me again so I charge up some magic and fire it at him but he dodges in time so the magic only hits his arm which got blown off by the attack

"Though my true power has been unleashed you can still keep up." He says while facing away from me

I turn around to look at him "Yep... I guess you're strong too." We start charging at each other ready to fight

Y/N POV
I walk up to Sona "Hey can you bring the barrier down? I need to get in!" She looks at me

"What?! Of course not we-" She stopped talking when I flicked the barrier breaking it and ran to the fight. Once I got there I saw Irinavand Xenovia laying on the ground with blood pooling around them.

"Ouch that doesn't look too good..." I say out loud

"You can say that again!" I hear a voice coming from behind me

"Ouch that doesn't look too good..." I hear them sigh

"Looks like we got a smartass!" I turn around to see Kokabiel, Freed, and some church guy

I just look at Freed with a deadpan face and punch the air with the shockwave of the punch making freed explode before any of the others could react I grabbed the church guy's leg and threw him at the moon. I then turn to Kokabiel who's trying to fly away but I jump in front of him and smile at him

Kokabiel screams but I silence him by punching him in the face making him explode. Irina and Xenovia look up at me shocked barley managing to stay awake. I pick them up and start running home with them. Hopefully Serafall is already back!

Serafall POV
I was laying on the ground playing dead and this retard actually bought it. He was sitting there monologuing to himself so I stuck my hand it and fired a magic blast at him causing him to explode. I exhale and get up but then his body quickly reformed. Shit. He laughed and transforms again

He uppercuts me causing me to fly through the roof of the ship then he gets behind me and starts charging an attack "COLLAPSING STAR ROARING CANON!"

I quickly flip over and regain my balance "CELSIUS CROSS TRIGGER" I yell out well shooting an attack of my own. After a minute or 2 his attack starts to overpower mine but then I hear a big crash and see Boros dissapear. The clouds start to split across while the earth shakes and the ship falls. I look closer only to see Y/N standing there with his fist out with a bored face.

"I need some help..." He says while scratching the back of his neck

"With what? As you see I'm kind of tired here!" I say struggling to stay standing up

"Uh... the two exorcist kind of died. But hey! Two more free peerage members right!" He says trying to lighten up the mood

I giggle a little before that turns into full blown laughter "You know what sure I will bring them back! And I don't know what the fuck I just found so funny!" I bring my wings out and fly off the ship but Y/N runs to the edge of the ship

"WAIT I CAN'T FLY! COME BACK!" I ignored him and kept flying away

-Timeskip-
Y/N POV
It was a couple days after the fight. Serafall bought Xenovia and Irina back as her knights while Rias and her peerage got back from turn-about ranch. Xenovia, Irina, Serafall, and I were all sitting at the table eating. Irina was still whining about how she couldn't believe thay god was dead and Xenovia was mad at how badly they got beaten neither of them really minded being a devil though. I slam my hand on the table and everyone jumps up and looks at me in surprise. I reach into my pocket and take a ring out and throw it at Serafall "MARRY ME YOU BITCH!" I saw someone do that on TV hope it works! She moves her head to the side and it keeps going and hits going and hits Rias who was standing at the door

"Sure!" She said smiling

"Time out!" I walk up to Rias grab the ring then walk back to the table and sit down. I put my hand back and throw it at Serafall again it almost hit her but she dodged and it went behind her and hit some short blonde girl with red eyes. She grabs her skirt and starts playing with it

"Well I don't know if I'm ready for that type of commitment... Not to mention I don't really know you... I'm also a boy..." I stomp over to him and take the ring and walk to to Serafall and she puts her hand out for me to give the ring to her I try to drop it in her hand but I miss and the ring falls to the floor

"FUCK YOU TOO BITCH!" I pick up the ring and kick out of the house I then turn to Serafall "So is it a yes or a no?" I ask

"Yes?" She says unsure of what just happened