Author's Notes:

Hey everyone! Hope you enjoyed the latest chapter of the Fifth Singularity. Man, It's been like a month or so. Since I write that now then let's go back to the first entry of the Cracks Between Dimension series. Now in the last chapter, Maxwell is now commencing his endgame With him chanting a spell. With Camazotz reporting that they have freed Loki. With Nero and the two Nitocris, still recovering from the kidnapping and the Norse Pantheon getting informed about Loki's breakout. Meanwhile, Ritsuka finds out that Mash is now pregnant.

As this was going on, three pillars of light suddenly appeared, with the heroes looking on in shock. Now in this chapter we will see the heroes fight back.

Disclaimers: I don't own any of the characters appearing in this Fanfiction, they belong to their respective creators: Kinoko Nasu, Takashi Takeuchi, Type-Moon, Rick Riordan, and Disney.

Section 7

The Past returns.

Maxwell POV

Inside the mansion

2020 AD

Inside the mansion we saw Maxwell talking with four individuals. One was a white-haired man with a black tunic wielding a scythe, the second was a woman that had earthly features, the third was a bald man with snake eyes holding a staff and the fourth a blonde man wearing a red sox shirt. These are Kronos, Gaea, Apophis, and Loki.

"So, can we determined that we could trust you?" The four asked.

"Oh, come on… You can trust me. When will you guys not doubt me."

The Riordanverse villains narrowed their eyes as if they still aren't convinced. Maxwell then started to chant some incantations as another group of five people. One was a blond haired woman wearing black clothing, the second was an Egyptian man wearing a golden purple headdress and is holding a disk in his right hand. The third was a flaming man with a sword in his right hand, The fourth was a man black-haired red eyes and green iris wearing a tunic and the other was a man also with the same eyes and hair as the other man. These are Agrippina, Akhenaten, Surtr, Riordanverse Theseus and Riordanverse Bellerophon.

"What is it, Master?" Agrippina asked.

Maxwell smiled, "Go assist our guests here at leading the attacks…"

The five bowed as if they understand what he is saying. And disappeared as if going to their respective destinations.

"Now then shall we go back to business, shall we?" Maxwell smirked.

The others shrugged with Loki saying, "Ok then… I'll play along just as long as you let me get my revenge on Magnus!"

"Yeah, I still have a score to settle with Percy Jackson… Right Grandmother?" Kronos said.

"I agree." Gaea nodded.

"As for me… I'm going to enjoy my time causing chaos." Apophis grinned.

The four then disappeared to their respective citadels, leaving only Maxwell alone. He then said, "Now then guys…" We then saw the Mayan Gods appeared out of nowhere.

"What is it? Manfred?" Ah Puch asks the Mage.

Maxwell then replied, "Let's wait for now." The ground shakes as we go outside and saw that the mansion has turned into a flying fortress.

Ritsuka POV

In Camp Half Blood, Long Island, New York

2020 AD

We then go to Ritsuka meeting with Zeus, Amos, Odin, and Frank via Iris Message. With Ritsuka saying, "Well then can we discuss what is going now…"

"Yes, the three green pillars that came out of nowhere." Amos said.

"As well as our old enemies return." Frank nodded.

Odin sighed, "I can't believe that Loki has escaped!"

"As well as my father and Gaea!" Zeus commented.

Ritsuka then said, "Calm down… Lord Odin, Lord Zeus…"

"I know! I know! Sorry…"

"I agree we got carried away…"

"Don't worry… I understand…" Ritsuka replied.

As they continue to talk, the others are now looking on, Amos then asks Ritsuka, "By the way, where is Miss Mash, I heard some rumors about her?"

"Well, she is now currently in the infirmary and yes the rumors about her being pregnant are true." Ritsuka answered.

"I see…"

They then felt something shaking, with Ritsuka saying, "What the— you guys felt it?"

"Yeah…"

"Master!" Ritsuka heard a voice and saw Caenis and Ana opening the door and running towards him.

"Wha—What is it?" Ritsuka and the others asked.

"Take a look outside." Ana replied.

They then went outside and saw that a Citadel was coming out of the fire pillar.

"Oh boy…"

3rd POV

In Camp Jupiter, San Francisco, California

2020 AD

Meanwhile, the Romans are now staring at the flame pillar. Where a same Citadel appeared from it, Frank muttered, "This isn't good."

The Servants there are also staring at this. With Nero saying, "Umu… I have a feeling that the enemy is in there."

"I agree with you, Nero…" Boudica agreed.

In Brooklyn House, Brooklyn, New York,

2020 AD

As this was going on, the Magicians and the Servants are also watching this happening, "That is one big floating building, Ozymandias-sama…" Nitocris said.

"This is not good." Amos muttered.

"Bloody hell, That is big alright…" Sadie agreed.

Cleopatra and Iskandar are also in awe at this, "Looks like they have ramp the ante, huh?" Cleopatra commented.

In Hotel Valhalla, Nine Worlds

2020 AD

As we go to the Hotel, we saw that the Einherjii, Norse Gods and Norse Servants are now looking at this with a serious expression. Odin muttered, "Looks like the Brotherhood are now getting serious."

Magnus then ask, "So… What should we do, Odin?"

Odin then looks at the Norse Servants who then nodded, "We have to get ready…"

In the four bases simultaneously

2020 AD

As this was going on the citadels open, it's gates and started to unleash hordes of monsters coming towards the four bases. With the Servants and the Riordanverse Heroes repelling them.

Suddenly the citadels summon large cannons, with them shooting lasers at the three bases. However, Ozymandias seeing this shouted, "EVERYONE LOOK OUT!"

He alongside Heracles, Romulus, and Scathach-Skadi repelled each of the Lasers.

In Camp Half-Blood, Long Island, New York

2020 AD

Ritsuka muttered, "Looks like we need to do something about those citadels…"

"Master what do you want us to do?" Nero asked.

The Master tried to think of a plan, he then suddenly thinks of an idea, "Everyone we need to storm the four citadels, they must be using those as staging points!"

"Are you sure, Ritsuka?" Percy asked.

"Yes, I'm sure… After all Maxwell is now going all out."

Kadoc then asks him, "So then who are you going to send then…"

Ritsuka think for a moment and then thought of an idea, "We obviously split into three groups to storm them."

"But who will go Master?" Hector asked.

"Let's see…" Ritsuka then decided that Nero alongside the other Roman Emperors as well as Hector, Boudica, Frank, and Hazel. The Pharaohs, Iskandar, The Kane Siblings, Zia, and Walt. And lastly Achilles, Caenis, Ana, Penthesilea, Percy, Nico, Piper, and Leo to attack the Citadels.

As Percy's group get ready, Penthesilea and Ana looks at the Son of Poseidon and thought about him. With the latter asking, "You still don't like him?"

"I don't know… But after hearing about what he's been through I couldn't bring myself to be angry with him."

"I see."

They then heard Ritsuka said, "Okay everyone… assault the Buildings!"

"Yes!"

Everyone then teleported to the Citadels, With Ritsuka, and the others looking on.

Citadel I (Roman Side)

2020 AD

We then saw Nero's group fighting minions going from floor to floor. With Nero smiling, "Hah, this small fries like this are no match for us!" She then unleashes a slash of flames at another horde of monsters.

"Man, to think their Nero is much louder, kinder, and happier." Frank muttered to Hazel.

"Yes, I agree it's a huge shocker huh?" Hazel nodded.

As they continue to ran, they stop with Frank asking, "Wait… Why did we stop?"

"There's a large door there." Boudica answered. The Demigods look and saw a large red door in front of them.

"I had a bad feeling about this…" Caesar muttered.

Suddenly a voice called out, "My… my… Looks like I have some interesting guest here…"

This caused Nero and Caligula to widen their eyes, "It can't be…"

The door opens and to Nero's horror, it was none other than Agrippina sitting on a throne with a staff on her hand.

"What the—who is that?" Hazel asked narrowing her eyes.

"Mo—Mother…" Nero shakingly muttered casing the others to look at the Emperor.

"Mother? You mean that is your mother Nero?" Boudica muttered.

"If that's your mother, then you're…" Hazel widens her eyes.

"Yes, Servant Caster, Julia Agrippina. Nice to meet you all."

Nero gritted her teeth as she starts having headaches and her eyes turning black, "What are you doing here?"

Agrippina looks at Nero and started to chuckled, "Isn't it obvious my dear… It is to guard this place…" She then summons hordes of Undead warriors.

This caused Nero's group to fight the soldiers. With Nero shouting, "MOTHER!" She starts to try and attack Agrippina, swinging, slashing, and thrusting. However, Agrippina dodge every attack as she growls in rage.

"What's the matter? My dear… Can't get enough of me?" Nero growled as she unleashes a pillar of fire only for Agrippina to unleash a wave of magical energy which hits Nero. This caused the latter's eyes to become black and started shouting in pain.

Boudica and Hazel noticing this ran up to Nero, with the former saying, "Please you have to control yourself."

"Please, I know that you're not the Nero that I know… But you can prove that you're different than him."

This words cases Nero to calm down and looks at the two, "I see, sorry if I worried you." She then looks at her mother and pointed her sword at her as the others join in, "Mother… This is where you will meet your end!"

Agrippina chuckled, "Well then let's get back to our battle then." They then started to charge towards each other.

Citadel II (Egyptian Side)

2020 AD

A this was going on, Ozymandias' group are now fighting Akhenaten, with Ozymandias shouting, "I never would have that you would be here! Heretic Pharaoh!"

Akhenaten smirked as he dodge another Laser, with Cleopatra, Carter, Walt, and Iskandar trying to slash him only to get parried by the disk.

"Tch… That disk is really infuriating." Nitocris Alter gritted.

Cleopatra then started to chant some Egyptian and Greek as she alongside Sadie unleashes a beam of green light only for Akhenaten to cancel it.

"Tch… This is getting tougher than I thought."

Citadel III (Norse Side)

2020 AD

Meanwhile, we saw that Surtr is now swinging his flame sword to try to burn the heroes alive. Scathach-Skadi, Sitonai, Brynhild, Sigurd, Magnus, and Alex then each dodge the attacks.

"Geez to think that he is here." Magnus muttered.

The fire giant King then laugh, "MAN… THIS IS THE MOST GREATEST THRILL I HAVE IN MY LIFE."

Brynhild was now getting irritated at this, "To think that he will be the one guarding this place."

"Yeah, you said it…" Magnus muttered.

Citadel IV (Greek Side)

2020 AD

Elsewhere, the two brainwashed heroes are now battling Penthesilea, Caenis, Nico and Percy. With the Amazonian queen getting angry as her eyes glows red.

"THESEUS! BELLEROPHON!"

She then started to attack the two as she uses her chain ball to wreck them, but the two heroes are too much for her. Penthesilea started to growled as she was stopped by Ana, Caenis, Leo, and Percy, "Hey that's enough!"

"Geez to think they got their version of Theseus and Bellerophon."

"Get off of me! I want to tear them apart!"

"Look I get you had a grudge against us Heroes. But this isn't what Hippolyta wants for you!" Percy shouted.

The queen looked at Percy and saw that he was right, for all of her life she hated the Greeks. Not knowing that it makes her worse than them.

"You know you are different from the Demigods I knew… I guess you might be one of the good ones."

"Gee thanks…"

They then continue to face the two brainwashed heroes.

Outside the Citadels

2020 AD

As this was going on four lights suddenly appeared coming towards the four citadels.

In the four Citadels simultaneously

2020 AD

Suddenly, the pillars hit in the middle of the fight, causing the groups to be shocked. Out of the pillars come a woman with white hair, copper skin and blue eyes, with a golden crown and is half naked with a black bra and white clothing, the second was a silver haired man wearing Greek Armor, the third was a girl that look like Brynhild, but with shorter hair and is holding a silver bow. And the third was a girl with dark red hair and is wearing a tunic with a red clothing. These are Zenobia, Ptolemy, Aslaug, and Hippolyta.

"No way…" Nero muttered, "Zenobia?"

"Ptolemy?"

"Duaghter?"

"Sister?"

Hippolyta turns towards Percy's group," Seems you needs some help Penthesilea."

This caused her sister to smile.

The Riordanverse heroes gasps with them shouting, "EHHHH!"

"The queen of the Palmyrene Empire?"

"The founder of the Ptolemaic Dynasty?

"One of the wives of Ragnar Lodbrok?"

"One of the Amazon queens?"

Meanwhile at Camp Half-Blood

2020 AD

We then saw Mash in the infirmary sweating and shouting in pain. The others consisting of Nightingale, Atalanta, Asclepius, Will, Ritsuka, and Hinako. With Ritsuka and Hinako being outside.

"Miss Mash just inhale and exhale…" Nightingale implored.

"By Olympus, this is getting really intense." Will said.

Atalanta then said, "I see the heads…"

As Mash screamed even more, Ritsuka is now getting worried about the entire ordeal. Atalanta then said, "Okay, here we go!" The two tins then got out of their mother and started crying. Ritsuka and Hinako then went inside and saw Mash holding two babies.

"Mash…"

"Senpai…"

He then ran towards her and saw the babies, and then looks at them with tears, "Can I hold one of them?" The others seeing this then went outside to give them time off.

Mash nodded as she hands over one of the twins at Ritsuka who then starts cradling the baby, "So is this the boy?"

"Yes… Senpai."

"So then, what are we going to name these two?" Mash asked.

"Well, how about this, we name the girl Mizuho and the boy, Tenko. How does that sound?"

Mash smiled, "I see…"

"Yes, in honor of Lancelot and Galahad."

In the four Citadels simultaneously

2020 AD

Back at the Citadels, the Chaldeans and the Riordanverse heroes are now turning the tide of the battle. With Zenobia and Nero double teaming Agrippina.

The Caster tries to hit both Nero and Caligula with her madness beams, Only for Hazel to block it. Zenobia then started to shoot lasers at the queen who then growled as she tries to cast another spell, only for Nero to kick her in the face.

"Tch… you are going to have a spanking!" She then started to clash with Nero interlocking with the latter. However, the Emperor won in the end by unleashing fire.

This caused the caster to fall back as she gritted her teeth, she then saw Nero holding a rose as she chanted, "Be prepared mother! Behold my talent and listen to the thunderous applause!" The room suddenly rained petals as Nero planted her sword, "Then praise me! Praise my Golden Theater!" The whole room then turn into what appears to be a theater with roses.

"Woah!"

"Wait if this is your theater, then this is Domus Aurea!"

Nero smiled as she shouted, "LAUS ST. CLAUDIUS! (ラウス・セント・クラウディウス (童女謳う華の帝政)"

Hazel and Frank then joined as they pierce the Queen in the stomach, with Nero slashing her mother. As the theater disappears causing the Queen to cough blood.

As we go to Ozymandias group, Ptolemy alongside Cleopatra are now overpowering Akhenaten, "Man to team up with you guys!" He shouted as he and Iskandar kick Akhenaten.

"Why you I'll show you that the god's powers are nothing compared to my disk!"

"Heh… We'll show you that's not true!" Carter shouted as he creates a large hawk avatar, He and Cleopatra then started to punch him rapidly.

"Grrgh! Why you!"

Cleopatra smiled, "Well then let's finish this" She then floated as she chanted, "This is the fallen sun of Egypt, the snake that signals the end." She stands as she continues, "By my command as the last Pharaoh:" Suddenly a huge snake started to appear, "URAEUS ASTRAPE! (ウラエウス・アストラペ (暁の時を終える蛇よ、此処に)"

The Snake alongside Carter then charge at Akhenaten with the later shouting, "DAMN YOU!" He then was hit by the snake and the hawk. Causing him to be mortally wounded.

As for the Norse side, Surtr is now getting hit by arrows released by Aslaug with her shouting, "Mother! Father! Magnus! Now would be a good time!"

Magnus nodded as he looks at Sigurd and Brynhild who then nodded as the son of Frey started to summon storm clouds. Which causes Surtr to howl in pain. He was then entangled by vines.

"DO IT!"

The couple then readied their weapons as they chanted.

"I love him, I love him not, I love him, I love him not, I love, love love love..." She then charge towards Surtr as she yelled, "BRYNHILD ROMANTIA (ブリュンヒルデ・ロマンシア (死がふたりを分断つまで)

Sigurd then prepared little knives as he chanted, "Demonic blade, complete." He then throws the knives, "Show me your pride. This is the dawn of destruction... BOLVERK GRAM! (ベルヴェルク・グラム (壊劫の天輪)"

The attacks then pierce Surtr as he growls in pain.

In the Greek side Penthesilea and Hippolyta are now beating the living crap of the two brainwashed heroes, with Percy suddenly trapping them. With him said, "Now's your chance."

Penthesilea nodded, her eyes turn read as she started charging towards and started beating the two, "Aaaaaah...kill, killkill! OUTRAGE AMAZON! (アウトレイジ・アマゾーン (我が瞋恚にて果てよ英雄) Aaah... Aaah... Aaaaaaaaachilles! Haaaaaah...!"

Wow! Good thing she's on our side. Percy muttered.

Agriipina laugh, "Be careful daughter, your enemy is much stronger!"

"Then they will be next, and we will win!" She glares at her with her black eyes.

Surtr and Akhenaten disappeared causing their opponents to sigh in relief.

Meanwhile, Theseus and Bellerophon regain their senses and somehow said, "I'm sorry." Causing the queens to be in shocked.

They then went to the rooms of the Riordanverse Villains, with Archer Chiron saying, "You must father?"

"My to see another version of my son.

"And to think you're awake again?" Romulus muttered.

"Hmm… to think I met the ancestor of Rome…"

"The old snake…" Ozymandias said.

"That's me…"

"How are you doing, Loki?" Sitonai asked.

"And why should I answer that, Freya?"

"Let's just get this started… I'm tired at this banter." Ana muttered.

The heroes then get ready as they charged towards the Riordanverse Villains.

Author's Notes:

And that's that…. Sorry if you find the fight scenes to be somewhat lacking.