Spoilers from included and/or represented works abound. Please read this fiction carefully.

"Mad Titan! You're bring some of our new allies' clients here!?" Steves Roger recognized Thanos.

"I know." Batman concurred.

"It's you! I knew you'd arrive here!" Hajun shouted.

Everyone quickly gathered around near the Shin Halberd. The Radical Six and members of S.E.E.S. also went in as well.

Cross-trivia: TheSpecialized Extracurricular Execution Squad, otherwise shortened toSEES, is an extracurricular after school club forPersona usersatGekkoukan High SchoolinPersona 3.

"Ok, so what's the reports?" Mitsuru Kirijo asked for reports.

The Hegemonies then explained everything that happened to them after they got the optimizations from Chizuru, while the Phantom Thieves described the whole place everyone's currently in.

"Cross Field, except it's filled with rubbles of what's from another worlds." Ruby concluded. "And there's the sky. Light and darkness split."

"Someone's busted Bionis..." Zanza facepalmed.

"I'm surprised, that me who turned god." The Architect told Zanza in surprised fashion.

"Shut up, that will be, will be." Zanza replied.

"Bionis and Mechonis is broken into pieces like the former once did in my world..." Shulk pointed it out.

"And wait... the chromified pyramid originated from the Last Reality?" The Paradigm is confused.

"My property no-clipped." The Cube Queen responded.

"We're here to find out what's wrong with the omniverse recently, kill the Empress Zero, and save the reality." David told everyone.

"Yeah, and we are in some big discovery this time around." Kogoro continued.

"Let's call this place..." Hirume announced. "The Crossing Wasteland."

"Pink Argus, into the work!" Yukari Takeba then ran and observed.

"Time to salvage everything here." The Origin then stood up and ran with the mission.

"You darling, I'll check the Pyramid." The Cube Queen then flew towards the Pyramid.

"I'll go ahead. Find some way to feed datas and infos directly from discovery into the systems and you." Thanos told Mercurius.

Everyone then split up and investigated the whole area. This time, Mercurius amplified the Akasha Terminal provided by Nahida towards everyone, allowing everyone to talk to each other during venturing.

In the meantime...

"Where?" The mad scientist's own creature asked the Fatui Harbingers.

"Why would you ask such insane topics?" Childe complained.

"Well... for Empress Zero!" The mad scientist responded.

"Where?" The creature asked again.

"I'm from Teyvat." Childe replied. "The Harbingers are Fatui and her majesty's lieutenants with authority."

"I'm the 11th." Childe continued.

"I'm the 2nd." Il Dottore replied. "Pierro is 1st, Columbina is 3rd,..."

Il Dottore successfully listed all the Harbingers' respective positions.

"Place of reckoning?" The creature asked.

"You seems... emotionless." Childe is surprised. "But the answer? Cross Field?"

"Exactly!" The mad scientist confirmed. "But it's only one of the places to be reckoned!"

"Ugh... Damn..." Childe is disappointed.

"Not even Celestia is permanently safe from Empress Zero's grasp. Much less you Fatui!" The mad scientist times the Harbingers. "By the way, I've researched and borrowed your powers..."

"Leave us alone!" Il Dottore shouted.

"What else do you expect from us?" Pantalone asked the mad scientist.

"Wait and see..." The mad scientist and the creature then left. "You can't escape, in case you're wondering. Bye."

"No way... The Fatui is actually busted..." Pierro is frustrated.

"Even for the majesty, that's too much." Childe concurred.

Il Dottore then setted his Akasha Terminal to talk to someone.

"I don't know who you are, but we, the Fatui Harbingers, are being taken hostage." Il Dottore contacted. "Any world could be destroyed at any time. Even Teyvat."

"You're... Il Dottore, the 2nd of Fatui Harbingers?" The mysterious voice.

"Yeah." Il Dottore confirmed. "I need you to help us and whoever's trying to save us."

"It's complicated." Il Dottore continued. "Be careful of Empress Zero and her servants."

"Speaking of which..." Il Dottore then told the mysterious one (through Akasha Terminal) the Zero's real name.

"I understand. Even though you're interfering..." The mysterious voice. "I'll take care of everything that's going to transpire."

"See ya." Il Dottore the. disconnected.

"I hope somebody save all of us..." Childe mumbled.

Hours of exploring and discovering went by, the entire group were able to gather insight on the Crossing Wasteland, including various deceased peoples from several timelines and worlds. They all then gathered near the Pyramid, where the Cube Queen just finished observing.

"The Pyramid is corrupted." The Cube Queen reported.

"The destruction of the Zero Point, the island, and the entirety of Reality Zero..." David mumbled.

"I heard that, cyberpunk." Ren Fuji responded.

"Why the chrome?" The Cube Queen asked.

"I found the one behind the chrome. It's the Herald." Ren Fuji reported. "The Herald from the Nothing."

"Where's she?" The Foundation asked.

"Places unknown." Ren Fuji replied. "She disappeared the moment Reality Zero is destroyed."

"We found a crystal." Reiji then showed off a rose-gold, yellow and red crystal: The Koei-Tecmo crystal.

"Crystal get!" The announcer exclaimed.

"Not that voice again!" David heard it.

"Wait... I can see your being annoyed by a certain announcer." Yomi realized. "You must have been punching the fourth wall."

"The storm incoming!" Shulk, have had visions of a(n extra-)dimensional storm, warned everyone.

"Oh well..." Akane is frustrated.

A gaping rift in the sky, stretching across the horizon, appeared with lightning and thunder.

"Emanation of Throne laws detected."

"How!?" Zanza is surprised.

"Those insane hole!" Hajun is angry.

"Misters! We need to work together!" David warned everyone. "Some threats could be here anytime!"

A massive army of humanoid robots that each looks like Canti, but with coloring of the Cube Fiends, and with glowing red eyes for visor.

"No way... cloned Canti!?" Reiji is shocked.

"They're... really huge in number though!" Lucy noted.

"Do you see it?" Vivi asked.

"Someone get a warranty..." Mercurius mumbled.

The army then is ready to take on the alliance, but Hajun went out to take his Law just to destroy them all at the same time. Hirume decided to complement by having her, both versions of Doctor Strange, Mercurius, Marie, Lanz with his Ouroboros, and the triplets to protect the alliance.

"—Om—" "Abokya Beiroshano Makabodara Mani Handoma Jinbara Harabaritaya Un. Vajra Thathuvan. Naumaku Sanmanda Bodanan Abila Unken Sowaka!"

Tenchi Genmyo, Shinbe Hen Tsurikiji...!"

At this point, the army of those robots just started attacking, and they could kill anyone at any moment now.

"No!!!" Meden is about to die.

"Shoko Mandala..." Hirume chanted.

"Manji Mandala..." Hajun chanted.

"Now!" Marie as she's about to be decapitated by one of those robots.

All the way to an inch to the alliance, Hajun and Hirume finished it all at the same time.

"Yaoyorozu!!!", "Muryou Taisuu!!!" Both chanted the end at the same time.

Both the light of the myriad dawn and the darkness of Tengu-Dou combined and engulfed the entire multiverses the alliance is standing in, destroying all of the robots while saving and healing the alliance. Not too long after, once the excess light and darkness from the laws came down, Hajun and Hirume fell unconscious, having been stressed from the very opposition of their laws.

"My goodness..." Mii is surprised. "That's too close."

The protection spell immediately wore down as well. The entire alliance then saw both Hajun amd Hirume passing out.

"They actually pulled it off." Xiaomu commented. "But because their laws conflicts with each other overall, the simultaneous usage of both overloaded each other and stressed them out."

"Those robots can lay waste to an entire multiverse. And yet those two actually saved us and destroyed all those robots at once." Due commented. "Even though they are normally the opposites, I appreciate their synchrony."

"None of us are dead yet." The alternative Thor commented. "Woo! We're still alive!"

"But the gaping shit's still up there!" Eunie noticed the rift is still wide open.

"Bruh..." The Radical Six facepalmed.

"I'm... honestly surprised." An image of a figure apparently wearing Infinity Ultron's armor appeared inside the rift.

"Someone's looking like that Ultron..." The alternative Star Lord commented, referring to about Infinity Ultron.

"What the queen's spark is this?" Noah is surprised.

"Tell me how did you destroy all of my Canti army?" The image asked.

"Ummm... Muryou Taisuu?" Ren Fuji replied nervously.

"I didn't expect any of you to become as powerful as you originally were when you're in your Throne." The image told the Hegemonies.

"How did you know!?" Marie asked back.

"I simply found you." The image then disappeared, and an actual figure emerged.

"How could you!?" Zanza is angry.

"Ridiculous!" Ragna is angry.

"My godness..." Earth-616's Thor then held his Stormbreaker.

The figure is wearing the armor similar to that of Infinity Ultron, with even the same breast/torso plate and and faceplate albeit silver, but is otherwise the same as Ultron-Sigma D except being tinted bright blue. The same crown Dark Kahn once wore is now integrated into the armor, just above the faceplate. The horns in the head is now glowing, and now is similar to Demigra's horns in shape. The wings is now covered with the powers and energies of the Black Lanterns (whose powers is fueled by death), and the body is covered by the combined aura of Ultra Instinct and Ultra Ego. The hands also has two completed Infinity Gauntlets to go with a complete set of (six compatible) Infinity Stones, just like what Infinity Ultron used during the incident in Night City. Bright blood-red and neon-yellow Tron-lines across the entire armor, too. A dark tail with blood-red lines and accents is also there, as does some of those dots of the same colors around the Infinity Stones.

Note: Dragon God Zalama, Cocytus, Sebas, Mare and Demigra, fused together into the Evil Omni-King Archon (from MaSTAR's 'Anime Wars'.

"Uhhh..." Hajun woke up.

"Yargh..." Hirume woke up. "What happened?"

Both looked up at the armor floating around. And...

"Oh great Throne!" Hajun and Hirume is jumpscared.

"I have transcended infinity." The mysterious one said. "For Empress Zero's and her servants' best interests."

"You're going too far." Thanos argued.

"I am transfinite." The faceplate then collapsed.

It is revealed to be Prometheus, the one who tried to rule all worlds of Weekly Shōnen Jump and one of the real worlds at the same time. Except: he's black with red accents, just like Archon.

"It's... Director Glover... no..." Kogoro is shocked.

"It's Prometheus the Jump traitor!" Haken and Kaguya is shocked.

"Not just that anymore. I am neither the Director nor the evil Omni-King." Prometheus revealed. "I am Prometheus Daikaiser!"

"Prometheus... fused with the Evil Omni-King!?" Radical Six is shocked.

The Daikaiser then telekinetically grabbed the head of Uatu before the latter could react. The former then crushes his head with his own hand, killing the Watcher instantly.

"No!" The Shinra and Ouma agents cried.

"How could you!?" Saya is angry.

"The passage of fate. Can't escape the crossing fate." The Daikaiser told the alliance.

"The Nexus of all Realities is no more, as I destroyed it." Prometheus revealed that he destroyed the Nexus of all Realities.

"How could you interfere with our day!?" Zanza furiously asked.

"Empress Zero's best interests." Prometheus replied.

A large portal appeared behind the alliances and in front of Shin Halberd, with Goku in his True Ultra Instinct and Vegeta in his Ultra Ego all emerged, alongside others.

"Guys! Look out!" Goku warned the alliance.

"Prometheus fused with Archon?" Vegeta commented. "Talking about stupid so-called 'passage of fate'!"

"Goku!? Vegeta!?" The alliance is shocked.

"Yeah, and we brought the fusions from alternate timelines provided by Zeno, and so much more!"

Super Saiyan 4 Gogeta and Super Saiyan Blue Vegito appeared as well.

"Hey, you!" Gogeta shouted. "What the hell is this!?"

"Wow, Goku and Vegeta and their fusions." Prometheus noticed Goku and Vegeta and fusions. "I wonder how did you escape the Dark Big Bang."

"Dark Big Bang!?" The alliance is shocked still.

"That means you just destroyed another universe." Vegito argued.

"Ichigo, Naruto, Sasuke, Luffy, and more is coming!" Goku told the alliance.

"Finally! Some extra saviors!" Meyneth is pleasantly surprised.

"Hmph." Prometheus isn't amused.

Ichigo Kurosaki using the Horn of Salvation and thus at his strongest ever. There's two versions Naruto Uzumaki arrived: The adult one, the Seventh Hokage in Six Path Sage Mode, bolstered with 'Wisdom of Age' (hence the vastly extended time limit), riding on top of the Nine-Tails, Kurama, provided from the teenaged one with Tailed Beast Sage Mode.

Besides that is Indra Susanoo provided by teenaged Sasuke Uchiha with his Rinnegan, with the adult version - who lost his Rinnegan, but still has Mangekyō Sharingan - riding on top.

"Hey, Shinra and Ouma and friends!" Ichigo greeted the alliance. "We're here to help you all kill Empress Zero, right?"

"The Seventh Hokage!" Reiji and Xiaomu noticed.

"Nice to help ya, believe it!" Young Naruto greeted back.

"Prometheus, you cane here to revenge?" Naruto asked.

"Don't tell me that you intend to erase us from existence!" Sasuke told Prometheus.

"Keep an eye out on this. Yound Sasuke warned the alliance."

"Yeah! Let's kick his ass!" Luffy D. Monkey, in his Gear 5 (using Hito Hito no Mi, Model: Nika, the awakened Gomu Gomu no Mi) complemented.

"You dare to defy me?" Prometheus is aggravated. "You seriously think so?"

The alliance redid the same protection given just casted, except without Hirume and the Ouroboros.

"Also, Wisdom of Age? Just long enough, but no more extra powers?" Prometheus questioned Naruto's 'Wisdom of Age'.

"Well, take it to the end of the spark!" The Ouroboros waged war against Prometheus.

"Very well." Prometheus responded. "If I destroy you all, you all fall."

Prometheus flew down towards the surface, and is on to face the alliance and the allies, all by himself.

"I'll kill you all." Prometheus declared, then jumped into combat.

The alliance then started into the fight as well, with what they are able to do. The vicious fight has commended at the very place, the Crossing Wasteland.