Spoilers from included and/or represented works abound. Please read this fiction carefully.
Puyo battle: a glorified version of Sig vs. Lemres. Sig distrusts towards Lemres for suspicions, but Lemres genuinely knows his nature; this battle is the strongest versions of both going full force with Fever.
Eventually, the demon managed to defeat the mage. "That's enough, comet warlock. I'm on your side now."
Demonic Sig then helped Lemres get up. "I need you to listen to me."
Later, the entire groups gathered. 7!selves and Mirle, Witch, Puyo war crew, Ringo and Renegade, Amitie and Renegade, Raffina, Sig, Klug and Renegade, Feli, Lemres and Renegade, the ghost twins, Renegade Maguro and Risukuma, Ally, Rafisol, Roquier and the count, that Seo, Ecolo and Renegade, the Tetra crew and Renegade version, all which frommain timeline and some clients from the main timeline's Spacetime Detective Agency.
"Suzuran... Suzuran... I miss S-U-Z-U-R-A-N..."/"すずらんーすずらんー... す・ず・ら・ん・一が恋しい..." 7!Ringo cried. "I let Ecolo destroy Suzuran... Primp Town... Ma-"
"Can you stop crying for once? You're melting our meeting at this point." Ringo criticized her past self.
"I'm telling you." Demonic Sig warned everyone. "Suzuran, Primp Town and the Madou will be history. And with Spacetime Detective Agency conquered, then she's coming after your worlds."
"I can't believe she'd do it." Witch is disappointed. "It's insane."
"We have to stop her." Raffina declared.
"It's gonna be a hectare-cubed fight." Ringo replied.
"No." Renegade Ringo refuted. "I brought you here to get the anti-Puyo weapon. And that plan nearly succeeded, but it failed."
"You're going home." Renegade Klug suggested. "Then we're destroying the inter-dimensional transporter."
"No, that's not enough." Witch exhibited traits of her counterpart. "It won't stop her from coming over."
"At least, it'll buy you time to prepare." Renegade Risukuma responded.
"Your Atari sacrificed herself. We won't dishonor her by just leaving!" Witch argued. "And also, I may act like my counterpart who serves for your Arle, but... I'm not yours."
"What!?" Everyone else is shocked.
"Yeah. It's the other me who cheated, but guess what? I fooled her and others, and took that advantage and managed to defeat her." Witch explained. "I was stuck in your Intral City, and snuck in to see my counterpart, then hacked her magic, gaining her skill with tech and some of her memories, and when I filled and defeated her, I simply left her be and disguised as her. Also, thankfully the scary me distracted her long enough to let me in."
-*laughs* "With pleasure." Dark Witch behind Witch.
"Damn! Your future, power-hungrier self protected you then!" Roquier is surprised.
"Anyways, we have an alternative." Ecolo suggested. "We bring over our Arle, and our past's friends. Finish this war."
"And bring on the Zero Point Puyos!" Mirle exclaimed.
"She's not like yours." Renegade Amitie told Renegade Ringo about Arle. "Don't let emotion cloud your judgement!"
"Let's just say..." Feli replied. "We had Arle taking over the inter-dimensional antenna which was built underground and setup in the satellite, pinged us, and then left it for the said satellite's destruction. Very complicated-"
A wall in the bunker exploded, and the entire crews noticed. Regime!Draco, Regime!Witch, Regime!Serilly, Regime!Akuma, regime ghost twins, and some of the same force encountered by Demonic Sig.
"You some my identity, you got away with helping the resistance!" Regime!Witch confronts her counterpart. "And you fooled me!"
"How is it to have yourself and your insane Highness to be kicked out of your own antenna, now mine?" Witch mocked her counterpart.
"She spared me. She realized that you barged in and stole my dear antenna!" Regime!Witch casts a meteor rain to her counterpart.
Witch blocks the meteors by magic for a while. This pisses her counterpart off.
"I'll kill you with Puyos!" Regime!Witch stack Puyos.
Puyo rematch, the last time Regime!Witch cheated and got fooled in return. However, Witch gets aggressive and uses the Fusion rule. The main surprised the other, and Garbage jelly eventually loaded the 'X' to finish the fight.
"Thank dark me I'm powerful." Witch have mercy. "You should be merciful to the innocent, just like me whether or not you're cheating. I taught mad me that."
"Arle's tragedy taught me one thing: To be respected, be feared." Regime!Witch got up.
Witch simply beats her counterpart up with magic. Suddenly, Witch got teleported into Themyscira... alongside Seo.
"Huh? Someone pulled me out of my... existence?" Seo noticed.
"What? Where am I?" Witch has no idea.
"I brought you here." Ares of the New Earth appeared.
"Who are you!?" Witch confronts Ares.
"Calm, please." DC!Ares told Witch. "We have much to discuss."
"I don't know who you are, but the Wonder Was knows you well." Witch replied.
"I'm Ares, the War God." DC!Ares introduced himself. "You're a witch?"
"Yes, witch in training." Witch responded. "You don't know Puyo Puyo, so I might as well be a Comet Summoner!"
Witch platformed and cast magic blades and meteors to fight DC!Ares. Seo just watch the entire fight.
"So... there's worlds far beyond Spacetime Detective Agency." Seo seemingly still possessed. "It's been a while since I first discovered that fact, and now that I got my memories of all back..."
"Now, Ares." Witch after the fight. "You're sending me back. And that businesswoman too."
-*chuckles* "Little witch, your friends will survive their skirmish." DC!Ares reassured. "If you truly wish to help them, you'll heed me."
"Please explain quickly." Witch replied.
"For starters, you're in Themyscira." DC!Ares then explained things.
In the meantime, the Puyo users and crews, and the Insurgency are fighting Rukasazo right in the bunker.
"We need to get the transporter out." Renegade Ringo told her counterparts. "If it's destroyed, you'll never get back home."
"Understood." Ringo proceeded.
"I know of that Arle's plan." Witch revealed. "This is not news."
"But do you know how she intends to execute her plan?" DC!Ares questioned.
"Not yet." Witch replied. "About Seo though..."
"I have a watching." Seo then used the space matter for projection of the timeline of Rukasazo, which: that timeline's Spacetime Detective Agency intends to use inter-dimensional soldiers to help Arle's conquest.
"Oh no..."/"ばたんきゅーでは?" Witch is horrified.
"Shocking, isn't it?" DC!Ares responded. "The inter-dimensional armies preparing to subjugate an entire timestream."
"I can't... believe it..." Witch watches in horror. "How could she... mine..."
"If only someone were able to stop her..." DC!Ares wipes out the matter with fire.
"But the conflict will re-energize your magic!" Witch argued.
"In the short term." DC!Ares replied. "If I don't escape not-your-Arle's grasp before she consolidates her rule, the conflict which fuels my power will cease permanently, and I won't be able to escape."
"I would thank you, Mr. War God." Wotch responded. "But that would imply you've done something... selfless."
"No need. The enemy of my enemy-" DC!Ares respond-
"Do I know you?" Witch stops DC!Ares. "Also, Wonder Woman hates your guts. But I need-"
Witch and Seo were caught by Regime!Ally and Regime!Rafisol.
"You've been discovered." DC!Ares told Witch. "I'll leave you to your work." *teleports away*
"So you actually collaborating with done Deus Ex Machina." Regime!Rafisol confronts Witch. "Also, you fooled our Witch."
"Your possession betrays your loyalties." Witch replied. "You're powered by Luwa, yet you both serves your Arle."
"I serve both." Regime!Ally argued. "Arle is the Great Hero. And all shall bow before her."
Witch decides to do 1v2, against both Regime!Ally and Regime!Rafisol. Their honed skills couple with power gave difficulty to Witch, even with her improved affinities. Witch still chains and defeats.
"Don't count of any of your prophecy, not-our-Ally, not-our-Rafisol." Witch mocked both.
Out of the Spacetime Detective HQ...
"Haste, my clients." This timeline's Seo, serving for Regime!Arle, preparing the forces. "We cast off within 24 minutes!"
"Take that to HQ. Sloop seventy-two. After drop-off, meet at south. The angels' team needs help with an inter-vehicle weapon transfer! Move!" And so on.
Suddenly, Witch and Seo appeared in front of the HQ and Regime!Seo.
"Seo! You're clients will stand down!" Seo calls out her counterpart. "They will not abet your Arle's madness!"
"You hold no sway here, pretender and your witch!" Regime!Seo dismissed. "I am in command!"
"You ruin Spacetime!" Witch calls out Regime!Seo. "We're to fix the space-time issues, not glorifying it!"
"After Primp and Arle, Arle herself showed me the truth." Regime!Seo denied. "The space-time isn't worth fixing! Only covering!"
"Breaking reality itself?" Seo argued. "As Zeus fooled Hippolyta, 'Superman' beguiles 'Wonder Woman'? Now, Arle manipulates you!"
"Your timeline's Spacetime Detective must be overbearing and crazy if you are their CEO!" Regime!Seo dismissed.
Regime!Seo did what she does with Puyo battle: throwing Puyo and use them for space-time attacks, normal chains to pinpoint. Seo does the same, but she has space matter, more powerful. Then a little while later as fight went on, Witch knocked Regime!Seo with magic.
"We are to give service!" Seo fights Puyo against her counterpart, with Witch and Ecolo(?) providing the Skill Battle. "Help the innocent! Save the lives of friends and good foes! That is our way!"
"You lecture me?" Regime!Seo to engage the Skill Battle. "On what the Spacetime Detective Agency meant to be!?"
"I don't seek to lecture." Seo throws Garbage Puyos against her counterpart. "I seek to depose!"
Visibly outnumbered and eventually overpowered, Regime!Seo is waning against her counterpart that got powers of Ecolo, and the help of Witch.
"Now, to fix what you've ruined." Witch let Seo defeats.
The clients tried to 'gage against Seo for defeating the counterpart.
"Hold, my clients! Hold!" Seo stopped. "While I am not of this timeline, I am the CEO! And I tell you now: This path is folly!"
"We're to unite the inter-dimensional people! Fix the issues... Overcome paradoxes... With care, compassion and love." Seo continued. "She has enabled one woman to inflict her rage on entire universes. Let her be consumed by her darkest art, rather than extricate her from despair!"
"Clients, let's return to the right side of the existence." Seo convinced. "Let us enter battle. But as the savior and protector, not destroyer. We're by the Spacetime Detective Agency. We are to save the multiverse!"
In the meantime, Regime!Arle, accompanied by Regime!Archan, Regime!Harpy, Regime!Doppelganger Arle, Cyber-Salde Canarl Shellbrick Type-3 (サアルデ・カナール・シェルブリック三式ロボ) and the Rukasazo police, started crushing the remains of Primp Town, laying waste to Madou and destroying Earths that Regime!Arle has been in. The resistance's police however, fought back, and so did the creature that didn't side with Rukasazo dynasty.
However, the bunker fight were moved into various places on the way, with the groups from Insurgency fighting against Regime!forces. Back in the bunker...
"It gets worse by the minute." Ringo warned her counterpart. "We have to get to-"
"Once I'm finished, you're all going home." Renegade Ringo reassured.
"I wonder what happened to my Maguro and Ris..." Ringo sighed. "You know though, I get it. Like you, I've been thinking for the day when Arle might turn evil."
"But without help, you'll die." Ringo told her counterpart. "And the resistance thus along with you. Insurgency."
"Then maybe that's my fate." Renegade Ringo replied.
"What fate do we believe in?" Ringo thought.
Ringo then reached the controls, but Renegade Ringo noticed and pushed the main counterpart away. Cue the actual fighting.
"This is my world." Renegade Ringo argued. "My fight."
"You made it ours when you brought us here." Ringo engaged. "Let's! Puyo brawl!"/"レッツ！ぷよっ拳!"
Both mixs in Puyo chains puzzle pop into the brawl, leading to dynamic beatdown with spells. This led to both Ringos bleeding, but the main one finished it by Permutation/Calculus on her counterpart's face, defeating her.
"If we're done here... We're losing time." Ringo got up.
"This is a mistake." Renegade Ringo coughs blood.
"You brought us here because you had faith." Ringo told her counterpart. "Faith we'd uphold the values you've given everything to defend."
"So trust us. Trust yourself." Ringo convinced. "And let's end this."
Renegade Ringo reflects on everything that happened since her Arle lost those Carbuncle, Dark Prince, Schezo and Rulue. She got up, and finally clears her doubt.
"You have no idea how to use it, do you..." Renegade Ringo told her counterpart. "I was hoping you wouldn't figure that out..." *activate the transporter*
The transporter brought in front of both Ringos, none other than Arle Nadja and Carbuncle. Turns out they were in space, would've died from the explosion that destroyed the satellite. But the transporter brought them in before the explosion.
Then, Arle transported Schezo, Dark Prince and Rulue, and they all alongside both Ringos and Carbuncle to... yeah.
"We need to get started for real." Arle told everyone. "Innocent people are dying."
"We'll take the others so you all can focus on their Arle." Renegade Ringo suggested.
"We'll do it together." Schezo suggested. "It'll prevent more unnecessary casualties. Then A- wait... don't call me a creep or a pervert!"
"Anyways, that certain cyborg is gonna be tricky." Dark Prince noted. "Collateral damage."
"Gu gugu guuu."/"ぐぐっぐぐー" Carbuncle conceded.
"We'll have to force that fight elsewhere." Arle noted.
"Anything else?" Schezo asked.
"I realized none of this is entirely accurate." Renegade Ringo spoke up. "But glad you're all back."