Currently in a world where an Invention known as the Manifestation Engine has helped solved all energy related problems. This powerful machine creates energy from the sky and now lies in the centre of an artificial, man-made island called Blue Island.

And on one island called Izu Oshima, we currently see four girls hanging out in a local beach.

"Ah~ the wind feels so good!" a girl said while stretching her arms.

Akane Ishikki

Akane has a maroon-colored hair styled in two pigtails and has red eyes. She wears a red & black track suit, red bloomers and red sneakers.

A girl next to her giggles, "It sure is." she replied.

Aoi Futaba

Aoi has long blue hair, blue eyes and a fair complexion. She wears a blue one piece sundress, white frilly socks and black shoes.

Then another girls walks up to them, "It's a good that we had fine weather today, it would have been disappointing to cancel our get together if it rained." she stated.

Wakaba Saegusa

Wakaba has a long dark-green hair tied in a ponytail and has light-blue eyes. She wears a white poloshirt with green tie, dark-green denim shorts and black sneakers.

The last girl took a deep breath, "I don't mind the rain... but I like this better." she said.

Himawari Shinomiya

Himawari has an average height with huge breast, she has a long light-brown wavy hair which goes down halfway to her back. She wears an orange sundress, black stockings and brown shoes.

"Still... I'm kinda bored..." Wakaba confessed.

"Why is that?" Aoi asked.

"It's just after everything about the Alones are taken care of, we haven't done anything active at all! Aside from school that is..." Wakaba replied.

"I get ya... but I prefer peace better than fighting..." Akane said.

Wakaba sighed, "That... I understand." she said.

"Don't worry Wakaba... you'll find something that will give you excitement... aside from fighting that is." Himawari said bluntly.

Aoi giggled, "Say... I wonder how Rei-chan is doing in her world?" she wondered.

Akane nodded, "You're right..." she said before looking at the sky, "... I bet she's having a good time now that her world is restored." she said.

"We can only be happy for her." Aoi said.

Suddenly, Wakaba saw a knife flying directly towards Akane, "Akane! Look out!" she called as she tackles Akane and Aoi down on the sand as the knife lunges at a rock.

"Where did that come from?" Himawari asked in shock.

Everybody then looks up to see Rei Kuroki slowly walking towards with several knives in hand.

"Rei-chan!" Akane called out in shock.

"Since when did you get back?" Aoi asked.

"And why did you throw that knife at Akane!? Explain yourself!" Wakaba demanded.

Rather than answering, Rei throws more knives at them which they quickly dodges.

"Why you? After what Akane has done for you, now you're trying to kill her!" Wakaba stated angrily.

"Rei-chan! Why are you doing this?" Akane asked with a look of betrayal.

Rei smirked evily, "What else? Get rid of you, of course!" she said as she throws another knife but it was suddenly blocked by a shield much to everyone's surprise.

However, their surprise turns to shock when the owner of the shield is revealed to be Rei Kuroki.

"I won't let you lay a hand on them!" Rei stated glaring at the other glare.

"W-w-w-what!?" Wakaba exclaimed in shock.

"T-there are two Reis!?" Aoi exclaimed while rubbing her eyes.

"But which one is real!" Akane cried in confusion.

Himawari then rubs her forehead, "I need an aspirin..." she muttered.

Rei then turns back to the girls, "Girls! I'm the real Reason Kuroki! That person over there is not me! You could see the difference!" she stated.

The girls then stared at the first Rei and quickly discovered the difference.

"She's right! That other Rei has red eyes!" Aoi pointed out.

"If she's not the real Rei then who is she?" Wakaba asked in confusion.

"You girls fought her before... she's Karasu!" Rei revealed.

"Karasu!" the girls exclaimed in shock.

The other Rei whom is actually Karasu gritted her teeth, "I didn't expect you to come... but no matter, I'll kill you as well." she said.

"You're gonna go through me first before you could get filthy hands on them!" a familiar voice spoke.

"What!?" Karasu gasped in shock when Louie appears in front of her which was followed by a powerful right hook that sends her flying to the sands.

The girls were surprised to see a disheveled person appearing out of nowhere.

Karasu slowly got up, "Damn it... you are the last person I expect to appear..." she muttered while glaring at Louie.

The disheveled God glares back at her, "I never expect for you to be alive Karasu... the last I saw you, you were blown to pieces by this girls." he pointed out, "You sure have the guts to show yourself again... and you even copied Rei's appearance." he added.

Karasu smirked, "I won't die that easy Louie... you and the other Supreme Beings knows that..." she said.

Rei then glares at her, "What are you up to now!?" she demanded.

Karasu giggles evily, "What else... continue what I left off... destroy the Manifestation Engine along with the entire world! And with the aid of the Dark Forces... I will succeed!" she claimed.

Louie narrowed his eyes, "So you're in the leagues with the Dark Forces now, huh..." he said.

"I would love to kill all of you right now but I had something to do... I'll see you later..." Karasu said before jumping in a red portal.

"Wait!" Rei was about to go after her but Louie stopped.

"Let her be for now Rei, you had catching up to do with your friends." Louie said.

Rei turns around only to be tackled by Akane on the sands, "Rei-chan! I miss you so much!" she said in joy.

"Akane! I know you're happy but we got a serious situation here!" Rei cried as she tries to pry the redhead on top of her.

"What situation?" Himawari asked in curiosity.

Louie then spoke, "Rei... I leave the explaining to you to the locals here, I'll be sending the team that will help you in this situation." he said before jumping into a blue portal which quickly vanished.

"Rei-chan... who was that?" Aoi asked.

"That was Louie... he is a God and one the Supreme Beings that restored my world back to normal." Rei stated as she got up.

"He's A God!?" Wakaba exclaimed in shock, "He sure doesn't look like one." she said.

Rei sighed, "I was thinking the same thing..." she said before looking at Akane, "I think we should to your house and talk about this, Dr. Ishikki needs to hear this out too." she said.

Akane nodded, "Let's go!" she said.

bzzzttt...

Later, the girls are gathered around the Ishikki Residence, they're currently inside a small laboratory and along with them was an old man and a young female adult as Rei began explaining the situation.

"And that's everything I can say." Rei finished her explanation.

The old man hummed, "I see... it never once crossed my mind that their are more worlds out there that I can ever imagine." he said.

Developer of the Manifestation Engine

Kenjirou Ishikki

Kenjirou has a light-brown hair with most part fading to gray, he wears a glasses over his dark-brown eyes. He wears a labcoat over a gray shirt, black shorts and sandals.

"So that man is a part of a huge organization full of heroes. That's amazing!" Akane said in delight.

"I was surprised too but it's actually a pretty good place, I made a lot of good friends there." Rei stated.

"That's good Rei-chan!" Aoi said in delight.

"But this is a problem... now that the person responsible for the Alone invasion from months ago is back... then we're open again for another Alone invasion." Kenjirou said in concern before turning to the female adult of the group, "Amagi contact Shijou-san and tell her about the current situation, we need to get everyone ready for any possible outcome." he ordered.

Amagi nodded, "Hai!" she replied as she took out her phone.

National Defense Force Officer

Mizuha Amagi

Mizuha has a short dark-brown hair with light-brown eyes. She wears a green bulky jacket over a white shirt with blue tie, green skirt and black heels.

Kenjirou then turns to his granddaughter, "Looks like you'll have to fight again Akane, I'm sorry." he said.

Akane shook her head, "No worries Grandpa! We'll handle it!" she said.

Rei nodded, "Plus... the team that Louie is going to send here is pretty amazing." she said.

"I wonder when are they gonna arrived?" Aoi asked.

Suddenly they heard an explosion which caused the house to shake.

"W-what's going on!?" Wakaba asked in shock as Himawari grabs onto her.

Then an image appeared in the computer screen, it shows a large dark circular object with four legs walking on the ocean heading towards the Manifestation Engine.

"Alone!?" Himawari gasped in horror.

"Dammit! I never expected them to appear so soon!" Kenjirou cursed.

Akane then turns to everyone, "Girls! Let's go stop that thing!?" she declared earning a nod from everyone.

Before anyone could move, the screen then shows the Alone getting attack by an unknown force.

"Hey! Something is happening with the Alone!" Aoi pointed out.

"What in the world?" Mizuha muttered.

Then it shows the Alone getting shot up from the sky followed by a few blast of fire before it suddenly exploded high in the air blowing it to pieces, everyone watches in shock, something destroyed the Alone.

"S-sugoi..." Aoi muttered in awe.

"T-that was a devastating explosion..." Kenjirou said as he looks at the giant mushroom cloud in the sky.

"Guess that takes care of the problem, but the question is, who did it?" Wakaba asked in confusion.

Rei's eyes widen in realization as a smile form on her face, "Everyone..." she said earning everyone's attention, "... they're here!" she declared.

bzzzttt...

Later, everyone followed Rei as she leads them towards a beach and saw fourteen individuals standing there.

"Gingka!" Rei called out excitedly as she hugs the older teen, "I'm so glad you arrived!" she said.

"Hey Rei!" Gingka greeted, "We came as fast as we could, though we arrived along with that whatever, so we decided to take care of it first." he explained.

Then Kenjirou approaches, "So this are the heroes that God send to us, please to meet you, I am Dr. Kenjirou Isshiki and I'm the creator of the Manifestation Engine." he introduced himself while offering handshake.

Gingka then shook his hand, "It's a pleasure... I'm Gingka Hagane and I'm a Solo Hero of the Heroes Coalition and right behind me is Marcus the Kane & his team." he introduced himself while gesturing at Marcus' team.

Marcus is currently wearing a red t-shirt with a Uchiha symbol with black long sleeves, black shorts and white shoes, he then stepped forward, "Nice meeting ya! I'm Marcus McGee but call me Marcus the Kane and this is my team, the New Age Avengers." he said as everyone introduced themselves one by one.

"Louie told us about the situation... the Dark Forces are behind this attack." Yoshika said.

Kenjirou nodded, "Rei had told us a few things about this Dark Forces but would you kindly tell us more about them." he suggested.

Marcus nodded, "Sure! We just need a place to talk things out, who knows, there might be ears anywhere." he said.

"Then I suggest we do that in the NDF Headquarters, I'm pretty sure Miss Shijou would like to talk with you." Mizuha suggested.

"That's a good idea." Ichigo said. He is currently wearing a black sweater jacket over a white tank top, gray pants and red sneakers.

Rei then looks around, "By the way... Miho isn't with you?" she asked.

"Miho had another mission along with Juniper and Kim. So she'll be gone for a while." Gingka replied.

"I think we should get going. I believe we don't have time to waste." Kenjirou declared.

Eddy groaned, "I wish we brought the Central Command in this mission." he stated. He is currently wearing red & white Hockey Jersey, black sweatpants and blue rubber shoes.

"Eddy... the Central Command is getting a makeover! While Adam did managed to make it work, it still needs some good repairing." Rex explained.

"Besides... you can use it anytime Eddy once it's fixed, I mean, the Central Command is yours to begin with since you found it." Duncan reassured.

Akane then turns to Rei, "What are they talking about?" she asked.

"They're talking about a Starship." Rei answered.

"A starship!" the girls gasped in surprise while Himawari has stars in her eyes.

Rei can only giggle at their reactions.

A/N: Inspired from Jexi the Hunter, Hope the Victor and David the Almighty Paladin. If the OCs are not created by moi, then it's not mine.