Right now, all 5 main Riders are flying towards Sandman in Command Jet form. Meanwhile, Kamen Rider Ziin is stepping into the air with her ability to control gravity

(Command Jet Forms)

(Kamen Rider Ziin)

Ziin: "Through intercoms" He's huge!

Geats: "Through intercoms" That's the same thing you said last night about my...

Ziin: "Through intercoms" Shut up, honey! I'm gonna have my vengeance!

Tycoon: "Through intercoms" Ace, Eula, focus! This isn't time for jokes!

Buffa: "Through intercoms" This is gonna be tough.... But I'm tougher!

PunkJack: "Through intercoms" The bigger they are... the harder they fall.

Na-Go: "Through intercoms" Let's go!

The team continued flying and headed towards the scene, Tycoon was the first to arrive, he then looked at Sandman.

Sandman: Tycoon, you are here! Dartz sent me to kill you!

Tycoon: The only one that is going to be killed is you!

Sandman rotates his arm continuously, creating continuous sandstorms that blow away the Riders. The Riders realized the dangerous situation and immediately flew in another direction to avoid it. The 6 of them flew in 6 different directions while blocking the sandstorm. Tycoon uses Float combined with Revolve On to transform into Command Cannon form.

(Kamen Rider Tycoon Command Cannon Form)

Tycoon fired energy bullets continuously at Sandman, but because of his sand nature, Sandman was not scratched. But those energy bullets were just a distraction, allowing Buffa to detonate two water towers in neighboring buildings at Sandman. Tycoon used elemental control to amplify that amount of water, causing most of Sandman's body to turn into mud. The other Riders also rushed to slash at him while Ziin and Tycoon stood below and fired continuously, but those attacks did nothing.

Ziin: Fuck!

Geats, Buffa, Na-Go, and PunkJack also landed where Tycoon and Ziin were.

Buffa: This is harder than I thought.

Geats: I have a way!

He then takes out a new buckle.

(Boost Mark II Buckle)

PunkJack: I see, using extremely high heat to melt sand into glass!

Geats: Yup! Henshin!

https://youtu.be/hN9DDgaD6h4

Desire Driver: BOOST MARK II! READY, FIGHT!

(Kamen Rider Geats Boost Mark II Form)

Suddenly, Sandman created many small clones of himself made of sand.

PunkJack: You kidding me right!?

Buffa: I will buy you some time! ZOMBIES!

A horde of Zombies emerged from underground, but instead of attacking the people, they attacked Sandman's sand clones. Because of the nature of the Zombies, they are commanded by Buffa, so they are ordered not to harm people.

All the remaining Riders immediately attacked the Sandman's main body while Buffa and the zombies attacked the Sand clones. While attacking, Ziin noticed something that made her hesitate.

Ziin: "Yells" WATCH OUT!

Ziin rushed to protect the couple and was seriously injured by the Sandman, causing her to reveal her true form as Eula.

Eula's mother: "Shocked" Eula?!

Eula's father: "Shocked" Eula?! But... what are you...

Eula: Don't worry about me! Run!

Eula's being sent flying caused Geats to berserk and summon a giant meteorite that plummeted to the ground. Nevertheless, just as Geats was about to summon the meteorite, the overwhelming strain caused by the Boost Mark II Buckle made him lose his transformation and revert to Ace. Seizing the chance, Sandman swiftly launched Ace into the air, and he landed directly on top of Eula.

Eula: ACE!

Eula's mother: "Shocked" Is he?!

Eula: My boyfriend, so what?!

Eula's father: "Shocked" Eula, listen... We...

Ace: Fuck... I have to fight... I... can't lose... right now!

When Ace was about to stand up, he vomited blood and collapsed to the ground. Eula was also able to help Ace stand.

Eula: Ace... don't forget, I'm your supporter.

She then activates Revolve On mode on Ace's Driver. And insert her Laser Raise Grip part on his Driver

Desire Driver: SET UP!

Ace's eyes opened wide, the severe injuries Ace received earlier immediately recovered at a terrifying speed. The sound of Ace's heartbeat echoed dozens of kilometers away. Ace slowly stood up, gave a slight smirk, and performed the familiar snap that made him famous.

Ace: Henshin!

https://youtu.be/4zq8R2KuwS0

Desire Driver: DUAL ON! HYPERLINK! LASERBOOST! READY, FIGHT!

(Kamen Rider Geats LaserBoost Form)

Geats then moved at high speed leaving many streaks of blue fire in their path. He then charged at each of Sandman's sand clones and turned them into glass statues. Meanwhile, Tycoon went to help his team out as they managed to defeat the clones as they still had Sandman. As they all run up a building. As they are face-to-face with Sandman

Sandman: This is where you are going to die!

Tycoon: Oh we will see about that asshole!

As they went toward them, Tycoon was smacked away by Sandman as he was sent away.

Na-Go: "Yells" TYCOON!

As she dodges an attack from Sandman. We see Izuku crash into a rooftop without his Rider form. He wants to stand up but he can't

Izuku: If I'm weak I can't protect anyone. I already lost Mother and Sir Nighteye. I have to get stronger or I'll lose everyone! I have to protect Eri, Stella, Ace, Neon, Markov, Wazowski, Lyney, Lynette, Freminet, my friends from U.A, Aunt Navia, Aunt Clorinde, Uncle Wrio, Uncle Neu... I have to protect them. But... that doesn't mean that I will become a monster! I... am... a god!

As Izuku's right eye became fully blue as half of his hair turned white. Izuku then activates his buckles

Izuku: Hen...shin...

https://youtu.be/XhTfxXa_Ct8

Desire Driver: NINJA! HIT! FEVER NINJA!

(Kamen Rider Tycoon Fever Ninja Dezastar Form)

(Not my art)

Returning to Sandman's position at this time, he has almost completely defeated PunkJack and Na-Go. Buffa's God Of Endurance ability is reaching the peak of Buffa's endurance, so it is difficult for him to withstand the next attacks. Geats is the only one who can still fight. That is until...

Tycoon: Oi...

Sandman: "Thought" He is not a monster but a demon!

Tycoon: "Through intercoms" GEATS!

Geats: "Through intercoms" I see what you mean!

https://youtu.be/liV2J92n0QQ

Tycoon uses Electro's Quirk and shoots a bolt of lightning into the sky, Geats also uses Lynette's Quirk, and Eula fires at the same time as Tycoon. All three elements of wind, ice, and lightning create an infinite snowstorm. The sky began to pour pouring rain.

Tycoon: Hey Sandman, do you know what happens when wet sand is frozen and heated at high temperatures and combined with electrolysis?

Geats: Clay!

(Yeah I made that up, I'm not good at chemistry)

Desire Driver: GOLDEN FEVER VICTORY!/LASERBOOST VICTORY!

Both Riders delivered a fatal kick straight into the giant Sandman's insides while simultaneously pulling the real Sandman out of the previous giant pile of sand. When the pile of sand came into contact with Geats and Tycoon's two kicks, it turned into liquid clay and disintegrated. The regular Sandman was caught by Tycoon and brought to a rooftop. He destroyed his quirk and he then grab him by the throat and grabbed the location device.

Tycoon: The third piece... Sandman

Sandman: What?

Geats: We know that Dartz is watching this and let us tell him something.

Both: Don't mess with the House Of The Hearth!

Then Tycoon snaps his neck. He drops him to the ground while Izuku smirks and he begins to laugh as AFO is going his job. As he was turning more and more like his father.

Izuku: He is right I'm a monster!

He was hugged by Stella, who had been brought here by Eula as she was crying.

Stella: You aren't a monster! You are Midoriya Izuku! A young caring boy who has people who will keep his humanity in check.

Izuku: "Smiles" Yeah...

Ace: But don't forget...

Izuku: "Smirks" That we are gods too!

As Izuku hugged Stella and didn't let her go. When they heard Sirens as then PunkJack returned to the spot and said

Wazowski: Guys, let's go!

Izuku: Right

As they left and headed back to their base, they changed their clothes as Eula and Stella went to see if their families were okay. Izuku called his aunties and uncles to see if they were okay which she was. As he then looked at the mirror he saw his right pupil was not blue and half of his hair was white. As he heard his father talking to him.

Hisashi: It's the only way you know that. You need this power to protect if you don't then they will die like Arlecchino and Sir Nighteye.

Izuku: "Thought" He is right I have to use this power to protect them... But... I won't ever become his monster... Cause I am God Of Weaponry!

While with Ace, Ace then was kissed by Eula as they stumble toward the bedroom they had their own "Personal Training" as both of them lay in their bed. Eula was laying on his chest as both were naked.

Eula: Ace...

Ace: Yeah?

Eula: We only have Rhino, Vulture, and Doc Ock left...

Ace: Vulture, I'm gonna let Wazowski have his final shot.

Eula: Okay

Ace: Want to go another round?

Eula: Yes, please!

As they went to have sex again. What Izuku didn't know was that his class and his past had learned some truths about him and his squad.