Around the time Souichi was transforming into the monster, Dragon Zodiarts, and going on a rampage against Genm and the others, Scorpion Zodiarts and Libra Zodiarts were watching the scene from afar, unnoticed even by the Riders and Bugsters.

"Ooh, so that's the one you gave the Switch to?"

"Yes, Hayami-sama, how do you like it? I think it's quite strong…" Scorpion asked.

"No… that was a mistake…"

"Why?"

"He's strong… but he doesn't have the brilliance of the Resurrection Star, and even before that… he's far weaker than the Dragon Zodiarts I know…"

"Did you say something?"

"Oh, no… it's nothing."

"But… don't worry, Hayami-sama, there's another person here who has the Switch."

When Scorpion looked at Sawa, Libra saw that Scorpion had done everything they could.

"I see… it's her…"

"Yes, I hope it's a good guess…" Scorpion muttered.

Meanwhile

"WAAAAAAAAAAAAAAHHH!"

"What's that…?"

"That's a Zodiarts… Hiiro-sensei."

"What!? He's…"

"Yeah, and that's…" Fourze muttered, and looked at the constellations carved into Dragon Zodiarts' body.

"Dragon Zodiarts… right, Kengo-kun?"

"Yes, the constellations on his body… there's no mistake… it's the Draco."

"Do you both know what it is?"

Poppy was curious about what Yuki and Kengo had said, so she asked them.

"Yeah, he's the one who attacked Amanogawa's Track and Field Club we've been chasing for the past two days…"

"Assault cases… what do you mean…?" Brave, who was nearby at the shocking statement, asked Kengo.

"Two days ago, a number of third-year students on Amanogawa's Track Club were attacked and injured one after another, and I found out that he was the culprit."

Kengo then showed Brave the video he had taken yesterday of the fight between Fourze and Dragon Zodiarts.

"I see… you're right, it's him." Brave said after witnessing it himself.

But Lazer Turbo, after watching the video of the Dragon Zodiarts, turned to Sawa who was by his side. Even if her boyfriend, Souichi, turned into a monster, she didn't seem to be so surprised, instead Sawa stood in resignation upon seeing the Dragon Zodiarts who went wild and attacked Genm and Redyue. Then, when Kiriya saw her, he put the two and two together.

"Hey… you don't seem surprised that your boyfriend is that monster… maybe there's a connection between why he was infected with the Bugster Virus and the Zodiarts?"

When Lazer Turbo asked Sawa, she spoke up quietly. "Actually… I've been having a hard time getting along with my seniors in the Track and Field Club… and I told Souichi about it before… then…"

"I see… Souichi-kun used that Switch to turn into Zodiarts and started attacking those seniors… right…?"

Sawa nodded quietly.

"So, when I found out about it, I told Souichi to throw away the Switch this morning, and…"

"I guess that's why he got stressed out and got infected with the Bugster Virus… I see…"

"Examiner, we'll talk later… but Delinquent, what do we do?"

"We can't just leave him there, right Kengo!?"

"Yes, of course. Now that a Zodiarts is here, we have no choice but to defeat him. Hiiro-sensei, you will have to stall the Bugster, and the Zodiarts will…"

"We, the Kamen Rider Club, will take care of it!"

Following Kengo, Fourze said to Brave and the others.

"All right, I'll leave that Zodiarts stuff to you for now, Examiner, Poppy Pipopapo! We'll take care of Genm and that new Bugster!"

"Righto!"

"Alright, Hiiro!"

"Okay, Poppy, you take on this Redyue fellow, Examiner, you take on Genm, and I'll face this Sora guy."

Brave then took out the Gear Dual β that Nico had been using earlier.

"That's… hey, Prodigy! You're still injured!"

"I'm not going to let them get away with anything! That's why I…!"

"But! If you fainted again… you'll be in a critical condition, Hiiro! You might not be able to attend the International Conference in four days! And then…"

"Poppy Pipopapo! I appreciate your concern… but… but I'm a doctor… and a Kamen Rider! I can't just sit back and watch while there's an enemy in front of me that needs to be defeated!"

"But…"

Just as Poppy was about to say that and force him to stop transforming into Level 50, Lazer Turbo grabbed her shoulder and stopped her as she tried to approach Brave.

"Wait… you're serious… aren't you, Prodigy…? I don't know what's going to happen to you…" He said.

"Huh, what's that…?"

Brave turned the dial on the Gear Dual β.

TADDLE FANTASY!

…Let's going king of fantasy! …Let's going king of fantasy!

"Skill Level 50. Henshin!"

Dual Gashat! Gachan! Dual Up! Taddle meguru RPG! Taddle Fantasy~!

"To be honest, I'm planning on attending the medical conference in Berlin… so let me take them down before I reached my limit…"

"Heh… is that so… alright, I won't say anything else… Prodigy, if you're going to play this game… then let me join!"

"…Hiiro… take care…"

"I don't know what's going on, but… let's fight together, Hiiro-sensei!"

Lazer Turbo, Poppy, and Fourze stood beside Brave and told him that they were ready.

Meanwhile…

"Huhuhuhu… that's good… we can have some fun…"

"That's right, Redyue-san, then let me… Cultivate."

Infection! Let's Game! Bad Game! Dead Game! What's your name!? The Bugster!

"You… if you're willing to defy me…"

DANGEROUS ZOMBIE!

"Grade X-0, henshin!"

Gashat! Gachan! Level Up! Mighty jump! Mighty kick! Migh~ty Actio~n X! A Gacha! Danger! Danger! Death the crisis! Dangerous Zombie!

"WAAARGH! I'll erase you… KAMEN RIDEEEEEEEEERRSS!"

Sora transformed into Gremlin Bugster and Genm from Level 0 to Zombie Action Gamer Level X-0.

"Hah! Let's see if you can do it!"

"Examiner, you take on Genm, Poppy, go for that Redyue, and Delinquent, you stop that Zodiarts… I'll take care of Gremlin."

"Alright, Hiiro."

"Understood! Kamen Rider Fourze! Let's settle this man-to-man!"

"Now we're revving it up!"

"Alright… let's go… commencing Bugster removal procedure."

After their declaration, they began attacking their respective opponents. And so the Riders' battle entered its unexpected second round, as they took on the leaders of the enemy all at once.