You are known as Blade the Stellaron hunters, well Blade of the hunters.

You are sleeping on a couch. Enjoying a bittersweet end of how your life could end if you find the person. Who can end it all for you, until someone kicks your feet off.

Silverwolf: "Hey old man, you dead yet or you just going to grunt like you normally do?"

You wake up slightly annoyed but sigh.

Y/n: "Can it, with your slang terms, and besides, where is Kafka at?"

Silverwolf: "Oh my it speaks, does not matter Kafka is coming soon. Also get ready we are told to land very soon."

Y/n: "..."

SilverWolf: "Wow now it can't speak..."

Y/n: "..."

Silverwolf: "It's a world called Union and all three of us are needed for this mission not sure why, but we have to anyways."

Y/n: "Union...huh are there any strong people there?"

Silverwolf: "Don't know don't care, don't want to know your creepy obsession with death."

Y/n: "And I have my reasons not to speak to you."

Silverwolf just smiles as she kicks up her feet on the table, as she puts her headset, and pulls out a phone and started to play a game.

Silverwolf: "Touchie much?"

Y/n: "More like you annoy me."

Silverwolf: "Ouch people love me."

Y/n: "Makes me question them then."

As the two go for each other's throats. Until the doors open showing none other than Kafka herself.

Kafka: "Now now you two~ Bladie, Silverwolf. It seems Elio told us to go to this world for a great reason, and the reason why. Is because a Stellaron is soon to be born, and it's up to us three to find it. Before well you know."

Her voice was like any normal voice seductive and alluring. Very charming to boot as well, she is a very dangerous for many reasons. 

Kafka: "Oh and Bladie has it started again your well you know?"

Y/n: "No...not for awhile sense the Laufo."

Kafka: "Good boy, now will you two play nice and not aim for each others. Neck again."

Silverwolf: "Can't promise sense the old bat intends to be a pain in the butt 90% of the time."

Y/n: "*Grunts*"

Silverwolf: "See what I mean."

Kafka: "Silverwolf you got to remember Bladie is not the...talkie type...remember that you time you lost your cool, when you did not win the crane game. And he had to call me when you lost it~ such a cute moment for you."

Y/n: "What do you mean we nearly gotten found out, because of her small brain can't take a damn lost."

Silverwolf: "Hey that game was rigged from the start and so I had to take action into my own hands."

Y/n: "Yes by almost breaking it."

Silverwolf: "But it never broke."

Y/n: "...Next time your taking her to a game thingy."

Silverwolf: "Thingy what the hell is a thingy?"

Kafka: "Now now~ anyways get ready...we got a new job."

Silverwolf: "And what of Mr.Crusty pant's over there, will he be in trouble?"

Kafka: "Oh yeah Bladie tell me one thing...would you control your urge to hunt and to kill?"

As you gotten ready you look over to her.

Y/n: "...Whatever do you mean Kafka?"

Kafka: "Union has lot's of strong people, some of them can range from all sorts, such as elf's, dwarfs to full on dragon to gods...can you handle it?"

Y/n: "Be it humans, dragons, devils or gods. All will share the same fate, by reaching the end of my blade."

Kafka: "Nice pun."

Silverwolf: "Bad pun."

Y/n: "...What do you mean pun...I said what will happened."

Kafka laughs a bit hearing that you, did not mean to do a pun.

Y/n: "I don't get your jokes but matters not to me, death comes for those. Who least expect it."

Silverwolf: "Damn dark dude."

Kafka: "That's our good boy..Now you two we must know what this Stellaron will look like this time."

Y/n: "Doesn't Eillo know?"

Kafka: "Where would be the fun in that, just in enjoy the Bladie...there is nothing wrong playing with your food~"

Y/n: "Hmph...fine then."

As you three left the comfort of your base. You lot made it without problems so far.

Meanwhile on the World:

Rias was minding her own studies, as she enjoyed every moment of it. With her friends and such, when she was looking upon a question that even stumps her. Which was a thing called a Stellaron.

Which was something she never heard of, it's told to be an advanced level of knowledge. It was something she was curious about it, a Stellaron told to have great power, and can't be destroyed.

Rias: "This is interesting, wonder how this thing could be taken down. It's powerful but, it's a fool hardy dream."

Akeno knocks on her desk.

Akeno: "Hello earth to Rias, is everything okay?"

Rias: "Oh sorry what happened?"

Akeno: "Your elder brother told us to come and speak to him and make sure to bring everyone."

Rias: "I see then, thanks Akeno. Oh and Issei what is he doing?"

Akeno: "Being himself."

Rias: "I see just the same as normal, man the boy needs to stop with his actions."

Akeno: "But that's his charm."

Rias: "It get's annoying 90% of the time."

Rias sighs and get's up walking with Akeno, until they met with the rest of the group.

Rias: "Seems we've all made it let's see what brother want's from us."

Sirzechs waiting for the ORC to come, and with other higher devils there as well. To have so many high devils there made them wonder what the deal is.

Issei: "Holy balls so many higher ups wondering what's going on?"

Kiba: "Yeah this is making me wonder who would case such attention for the pillars of the underworld to be here?"

Sirzechs: "Welcome sister and her peerage, we got something you all must hear."

As they all sit down waiting to hear the news.

Sirzechs: "Everyone that is here must keep this info on a downlow by any means and I mean by any means."

Searfall: "Is he back?"

Beelzebub: "Is it true Sirzechs from our sources he's back?"

Sirzechs: "Yes..him and it seems he's gotten a team with him."

As Rias and the group wonder who they are talking about, as some of them are a bit annoyed and some not wanting for this.

Rias: "Brother what's going on?"

Sirzechs: "Oh yeah that's right we summoned you lot here for a reason. There is a group known as the Stellaron hunters, and they are powerful in their own right. It has 5 of them, we are not sure about two of them yet...but three of them have been active very lately."

Akeno: "Oh they are bad they need to be taught something that might be fun." 

Beelzebub: "Best not to engage some of them, they are much more powerful than you think. A simple lighting spell would work on them."

Sarfall: "I'm with B."

Beelzebub: "I have a name."

Sarfall: "I know B, but anyways. These 3 are threats, as one of them was human. And trust us he and these two others are much of a threat than you think."

Sirzechs: "Sarfall is right, this man has a codename as Blade...for he is the Blade of the hunters, he was a normal human one time. Until he reached a point in life to gain immortally, and now he lost his sanity to it." 

Sirzechs: "This is what he used to look like."

(Image of blade with white hair, sorry could not find a decent one.)

Akeno: "My, my oh my he sure is handsome."

Sarfall: "That's before he went crazy, now he just looks the same just darker green hair. If you meet him don't face him by any means."

Issei: "Man this guy is jacked up, wonder if I could be that fit, but what makes him a threat?"

Sirzechs: "It's his immortally as we said, but he has other powers. We don't know what they are, just be cautions about. Meeting him or even facing him, if he knows you are strong either contact us...or try to run."

Koneko: "He looks tough and what of the other 2 you mention?"

Sirzechs: "Thank you Koneko, for dragging that up, these two are also dangerous in there own right. Silverwolf."

Issei: "She's cute."

Sirzechs: "Best not to face her as well, she can hack into about almost anything. She thinks the universe or any world is just a game to her. She can mess with reality to a point. But not as crazy she can just be a nightmare to deal with...But the leader of these 3."

Sirzechs: "The most dangerous and their leader Kafka. She is not the real leader of the hunters but she does order around these 2 a lot."

As he clicks a button and shows Kafka.

Issei: "Holy shit she is crazy hot...She can do all-"

Rias: "*Ahem*"

Issei was looked at from everyone. As he stops himself and everyone looks back to the screen.

Sirzechs: "Anyways, Kafka is a master manipulator and has caused governments. To fall and able to nearly cause a whole ship of people, to go into a panic."

Rias: "How big was this ship?"

Sirzechs: "Big enough to have it's own sea and such...These three as we said don't engage for many reasons. If met with, Blade or his given name Y/n don't engage, Kafka same as before don't fight unless you want to attack your friends."

Beelzebub: "All of them are powerful and dangerous so do your best not to face them. Do not spread this info if you do this might cause a panic, that these three might use to cause more damage."

Rias looks at the images of your team, and looks at you the most wondering. Why it's best not to face you, or even engage you. Not knowing that you might be a threat, to her and everyone on union.

Back you:

As the three of you landed upon the world of Union, you kept your blade close. As you gave a blank look. Only waiting for the time to fight back or to strike someone down in one blow.

Kafka: "Ahhh so nice to stretch again."

As Kafka stretch to the sky, it was a nice, mid-morning breeze. Silverwolf, just blow bubblegum. While playing on her phone.

Silverwolf: "Kafka can I do something that is not on Eillo's script yet?"

Kafka: "Yes little Silverwolf~ and besides for the time being. We need to wait for you to strike back. Eillo said, you, me and Bladie play a huge role. But let's hope the goody two shoes. Astral express don't show up yet."

Just hearing the nameless other title. Made you do a sick grin thinking of facing Dan Heng again made you smile ear to ear. Ready to face him hoping to face him again.

Y/n: "Let them come...I wish to face him again."

Kafka: "No no Bladie you almost went off script last time. If I was not there, lot's of bad stuff would have happened we can't allow it got it."

Y/n: "*Grunts*"

Kafka: "Now you two let's have some fun got it."

As the three of you start to walk off to the world of union not knowing what might be there waiting for you.