The group enters through the portal, and see that they're indeed in hell...except it was more distorted, there were rifts in the sky and they could see many different objects from Earth that got transported to this hell

Blue: Good Grief!

Echo: What Hell is this?

Penny starts scanning the area and discovered something massive

Penny: I have detected different types of demons in this realm of hell...b-but that shouldn't be possible!

Echo: Maybe this hell is a fusion of all the different hells

Wanda: Because of the rifts?

Echo: Yeah, which means that we can encounter anything really

Blue: So we need to look for some odd looking tower...one we have never seen before

Penny: I'll do a scan, I know most of the different types of Hell Towers in my database

With this new found clue, the group of five head into a direction, hoping to find something as Penny scans the area around them. While on the way they didn't encounter any demons so they mostly stayed relaxed on their walk, but stayed cautious as Blue had Ace of Spades out

After 20 minutes of walking through a few dust clouds that they exited, they saw a tower looming in the distance.

Blue: That tower could be the one, Penny?

Penny: On it!

She scans the tower but gets negative results, confirming that this could be the one

Blue: It has to be, I'm getting a bad feeling from it.

Echo: Then let's go and blow it up

Wanda: What if the thing to stop it is inside?

Echo: Then we do that first...then blow it up!

Wanda: *sighs*

Kanao: Blue, I don't think this will be easy

Blue: *headpats her* You're right, but we will be careful

Kanao: Ok

They were then stopped by two figures as Wanda and Echo were ready but Blue stopped them, they were confused at why he stopped them

Wanda: Blue why are we stopping?

Blue: Because they're not the enemy

Echo: Who are they?

Blue: *smiles* Good friends

The two people that showed up were Alastor and Charlotte or Charlie Magne

Alastor

Charlie Magne

Charlie: I knew I felt someone familiar nearby!

Alastor: Blue my good boy! I see you decided to visit the new hell!

Blue: Unfortunately yes!

Wanda: Blue who are they?

Blue: This is the Radio Demon Alastor! And this is Charlotte Magne, the daughter of Lucifer! Well one of the Lucifers since i know two

Charlie: But call me Charlie! Everyone does

Penny: Hello Charlie!

Charlie: Hello! *gasps* You brought Kanao?! Excellent!

Kanao goes to greet her as Charlie presses her cheeks

Charlie: You're still so adorable!

Blue: I met them when I visited their Realm of Hell with Nezuko and Kanao

Alastor: Speaking of Her, how is the little demon girl?

Blue: Oh she's good

Alastor: Still astonishes me that she hasn't attacked a human to eat, I might need to do some experimentation on some humans

Echo: Ay Yo what the fu-?

Blue: Please don't do that

Alastor: No promises! Are you investigating the cause of the rifts? I'm going to assume yes

Echo: We are

Charlie: Wait is this Echo? Your....other half?

Blue: Yeah he is more of a brother to me, this is Wanda and that other girl is Penny!

Wanda: This is such a strange birthday

Charlie: It's your birthday?! Oh well...it must be interesting

Wanda: I don't mind

Penny: Did the both if you come here to discover why the rifts appeared?

Charlie: Of course, the rifts appeared in my hotel which got overrun by demons. Thankfully Alastor eliminated them

Blue: How did you eliminate them?

Alastor: Oh you know how I did it~

Blue: *whistles* Yeah you're right...must of been brutal

Suddenly multiple balls were thrown towards us as Blue, Echo and Alastor were ready and destroyed them before they could hit them. The smoke that generated from the collision of our attacks to the balls cleared showing two demons that I recognised to well

Muzan the King of Demons (Of his clan of demons)

And Susumaru, one of the demons who serves under him and the one who threw the balls

Muzan: Hello Blue

Everyone was alarmed, especially Kanao who was frightened at his prescience

Blue: God damn it

Echo: Piss off Michael Jackson!

Muzan: I am not Michael Jackson!

Blue: Keep your Hee Hee Magic away from us!

Echo: You smooth criminal!

Muzan: I swear I will-

Everyone started laughing, which was good for Kanao since she won't be scared. Even Susumaru was laughing but it all stopped when Muzan slapped her, sending her to the floor

She felt her cheek and and looked to the ground as Muzan stared at her with anger

Muzan: Do not laugh, otherwise I will kill you

Susumaru: S-Sorry Lord Muzan....

Blue: *clearly angry by this* Why are you here...Muzan? How are you here? You don't live in any Hell...despite you belonging here

Muzan: There is no point, as you will all die by my hand

Echo: You're talking mad shit for someone in Phantom Flash distance

Wanda: There are seven of us anyways, and two of you. What makes you think you have a chance?

Susumaru gets up and despite being hurt from Muzan, she forced herself to smirk

Susumaru: That won't be a problem

Then they saw Muzan lift his hand in the air and click his fingers, they all readied themselves except for Alastor who just stood naturally waiting for what will come

Just then they heard rumbling on the ground as a figure appears out of the ground and in front of Blue, giving him no chance to react as he is punched away and into a rock.

Out came a giant green titan....that Titan was Crota, Son of Oryx, both basically Gods

Blue gets up and looks to see Crota already charging at him but Echo comes in and kicks Crots back slightly

Echo transforms into his Shadow Limit Breaker Evolution

Echo: It just had to be Crota, don't tell me you're already out for the count?

Blue: Nah you're joking, it will take more than that to take me out!

Blue gets up and transforms into his Galaxy Limit Breaker Evolution

And enters a battle pose like this

Crota recovers and stands up with his sword ready

He was clearly taller than the two of them by a lot with a height of 8ft with Blue and Echo both being 5'10

Meanwhile Wanda and Kanao were battling Susumaru who was having a hard time since both were clearly stronger than her while Penny, Alastor and Charlie were confronting Muzan

Susumaru was trying desperately to hit Wanda with her temari balls but Wanda just used her powers to stop them midair, throwing them back at her before keeping her in place for Kanao to slash at her, she was going to go for the head before Wanda stopped her as well

Kanao: Why?

Wanda: Because Blue has taught me to show mercy, isn't he your brother?

Kanao: O-Oh....

Wanda: It's alright

She drops Susumaru to the floor who looked at Wanda with confusion

Susumaru: Why?

Wanda: Like I said just how, mercy is a good thing....even for those who are not good

The two leave her on the floor as she thinks to herself. While that was happening, Charlie was clashing with Muzan while in her more demonic form

Muzan: So you are the supposed daughter of Lucifer Magne? I know him actually

Charlie: You do? *throws a kick*

Muzan: *blocks it* Of course I am a Demon lord like him, except I'm stronger than him

Charlie: I don't believe you!

Muzan: Then let me prove it!

He kicks her back and was going for a follow up attack but Alastor block his strike with his microphone staff, staring at him with his devious smile. Penny also has missiles ready to fire but Alastor stops her.

Alastor: I will be fine Penny dear...besides there will be demons coming to attack you

Muzan: Ah that must be the ones under my command

Alastor: Well it should be nothing to worry about

The two clearly weren't going all out so they just casually had a brawl, while Charlie and Penny took care of the demons that came after them, soon helped by Wanda and Kanao

Blue and Echo were fighting Crota and struggled, Crota wasn't an easy foe, he is a God after all. Blue was knocked back but that was perfect for Echo to attack using Shadow Drive

This move was similar to Blue's Anarchy Rush in his Demon Form, the only difference was this focused on one point instead of the whole body. He aimed for the core of Crota which did immense amounts of damage

This move was meant for instant kills, unfortunately he would have to do it more time to take down Crota. Crota recovers and smacks Echo back with his sword, Blue caught him as he leaped and spin kicked Crota in the face

This was then followed up by Echo using another Shadow Drive and following it up with a Phantom Flash that Blue avoided and used Final Shine Attack

This did even more damage to Crota who still got up

Blue: I forgot how tanky Crota was!

Echo: Yeah this is a pain, why don't you use your more destructive moves?

Blue: Well it would not only kill Crota, but everyone else here

Echo:...Good point...want to do the thing?

Blue: You know it!

They dodge Crota's Torpedo shots as Echo uses his Gate of Darkness, which are Void portals used to warp anywhere as they maneuver around Crota, irritating him.

Then when they dodge for the last time, Echo warps Blue in front of Crota as he had a Dragon Smash ready, surprising Crota

Blue: Dragon Smash!

Echo: And Gates of Darkness!

Blue/Echo: Combo!

Blue strikes Crota's Core with the Dragon Smash, knocking him to the ground as Blue and Echo high five

Blue: Works every time

Echo: Always

They see Crota get up but barely as his green armour was glowing brightly

Blue: Hey that usually means something will explode right?

Echo: I mean...yeah?

And that is exactly what happened as Crota exploded, Blue and Echo were blasted back as everyone stopped to see what had happened, they looked to see that instead of Crota there, there was a girl

Wanda: A girl?

Echo: Oh no

Charlie: She looks cute!

Blue: Eh? Who are you?

The girl immediately got angry and pouted at Blue with a face that isn't really angry and more cute.

Girl: Have you already gotten who I am?!

Blue:........Hah?

Echo: Oh no no

Kanao: *looks at Echo* Do we know her?

Echo: Oh we do

Penny: I scanned her but she is unknown

Girl: Hmph! Since you have forgotten who I am! I shall announce myself! I am the child of Oryx! CROTA! A God!

Everyone: WHAAAAAT?!

Blue: Wait you're Crota?! B-But you were so much taller!

Crota: That's the one thing you notice?!

Echo: Guess I was right....I clocked it before all of you

Whike everyone is confused, Muzan escapes and leaves Susumaru there who was also in confusion

Susumaru: She was a girl?

Blue: I-I mean I can see that you are a girl.....but you were taller than us and know you're a bit smaller than me!

Crota: GAAH! I WILL KILL YOU HUMAN!

Echo: Yare Yare Daze

Blue: E-Eh?! What did I do?!