Luna follows Sento as he leads them in tracking Kaisei. She drives the spare motorbike because it is too small for four people. "What was that Invincible and Rebirth Knight thing in Katsuragi's data?" Sento asked them curiously and remembered seeing Hyper Muteki Gashat and Rebirth Knight's data.

"Just what it sounds like." Parado answered and understood what he meant. "Emu and I combine, and Ex-Aid gains a power that makes him invincible. I'll let Luna or Luella explain about Rebirth Knight to them."

"I'll assume she unlocks the final form of Moon Knight?" Luella asked with a hint of proud tone that she successfully unlocked all of Moon Knight's form. They nodded and saw Ophelia's final transformation whenever she needed it. "I made the right decision to choose her as my successor."

"You never used that form before?" Sento asked her curiously, and she responded no. "How come?"

"Moon Knight has a mind on its own, Sento. It allows me to transform different forms, but Rebirth Knight isn't one of them." Luella answered. "It allowed me to access its power an hour ago, but I couldn't use its full potential because Ophelia had half of it. Rebirth Knight is one of the powerful Knight forms that allows users to boost their ability and skills to destroy, restore the entire world and create a new one, hence Rebirth Knight's name. Ophelia is always cautious of using Rebirth Knight."

"I see... that explains it." Sento hummed and didn't expect Rebirth Knight to be one of the strongest knights. He's grateful for Luella to absorb it if someone falls it into the wrong hands. The genius physicists didn't expect Takumi to manage to absorb their essence and gather their data. "I was wondering... why did Katsuragi take Ex-Aid's essence instead of yours?" He asked Parado curiously while he remained silent. "He must've thought, in the worst-case scenario, that Ex-Aid's power could be necessary. So before Enigma could disable his Gamer Driver, he took the essence and Moon Knight. How did it split Moon Knight's essence in half? Luna and Luella?"

"I don't know how, but I think Ophelia tried to stay strong and hold onto her power." Luella hesitated but couldn't think of a theory of how Ophelia's power split in half.

"There's only one solution for it. Sorry, I need one of you to make a call." Sento asked Luna and Parado to contact their friends.

"Here, take this." Luella reached out her hand, revealing the snowflake crystal necklace. Luna leaned a bit closer, and Parado accepted it. "Used it to call them rather than the bottle. We can't risk you draining your energy, Parado."

"What does it do?" The male Bugster asked her curiously while gazing at the necklace in his hand.

"It allows you to contact Ji-yoo and the others." Luella explained.

Sento glanced at the object, surprised that the crystal allowed them to contact Ji-yoo wherever he went. "I didn't know it could do that."

"It's the same thing when you have my crystal to track me wherever I go." The female detective retorted, examining the string around his neck. The string contained a moon crystal hidden underneath his clothes. "Let's tell them what we've gathered so they can be aware." She suggested.

————————————————————

|| 𝗘𝗮𝗿𝘁𝗵-𝟭 ||

"Making the two worlds collide!?" Emu yelled in shock after receiving an update from Sento and the others.

Ophelia is driving a car because the motorbike wouldn't fit four passengers, unlike the car. Emu only had one motorbike and didn't have a spare one, so they decided to use the four-wheel vehicle.

"Yeah. That's apparently what Mogami's after." Parado explained in a grim tone.

"We don't want to think about the next outcome if he finds out that your essence is split in half, so do everything to obtain it completely." Luna pointed out in a worried tone. "Luella-sama absorbed it in fear if Mogami had it in his grasp... who knows what will happen?"

"It's better to keep the bluffing and let him assume Alita can access all of Moon Knight's power." Ji-yoo suggested as they grunted and felt the aftershock.

Ophelia cried out in pain while Ji-yoo silently groaned, clenching his chest. The former goddess gripped the wheels tightly as she harshly pressed stop the car.  "Fee-chan!" Emu unbuckles his seat to check her condition.

"Ji-yoo!" Ryuuga tried to check on him, but Ji-yoo slapped his hands away.

"I don't need your help." Ji-yoo spat in anger as his eyes flashed blue.

"I'm trying to help you out, man!" The wanted fugitive couldn't understand Ji-yoo's behavior when expressing concern for him.

"Then don't." He hissed, unfastening the seatbelt. Ji-yoo refused to let anyone help him, no matter how worried they were about him. "How many hours do we have left?" The disguised detective asked Emu and Ophelia.

"I'm fine, Emu." Ophelia assured him in a weak tone, no longer feeling the pain she felt. "We only have three hours left." They heard the screams of civilians and saw the Nebula Bugsters attacking them. "Emu!" She went and rushed ahead to save the civilians, Emu following her.

"Hey! What about Enigma!?" Ryuuga asked and only left being ignored.

Ophelia created a purple disc before throwing her hand forward to destroy them. "Sir, ma'am! Please leave!" She pleads, pulling them up.

"Fee-chan, behind you!" Emu warned her before tackling the Nebula Bugster.

"Thanks, Emu!" Ophelia thanked her childhood friend before creating a barrier to the civilians before the Nebula Bugsters struck them.

Ji-yoo and Ryuuga watched them fighting against Nebula Bugsters. Emu can no longer transform; he's willing to protect the people, while Ophelia uses half of her ability to fight the Nebula Bugsters.

"You two... fighting for love and peace too, huh?" Ryuuga whispered while Ji-yoo glanced at him. The wanted fugitive sensed his stare and looked at him with a skeptical yet blank look. "What?"

Ji-yoo shook his head before lending Emu and Ophelia. "Luella would kill me if anything happens to her descendant." He snapped his fingers as the Nebula Bugsters shattered into frozen statues.

Emu and Ophelia were caught off guard by Ji-yoo's abilities to control and manipulate ice elements. The disguised prince stared at them. "Speak any of these and I'll freeze you all." He warned them before glowing to transform.

"𝑭𝒓𝒆𝒆𝒛𝒆 𝒎𝒚 𝒆𝒏𝒆𝒎𝒊𝒆𝒔 𝒂𝒏𝒅 𝒔𝒉𝒂𝒕𝒕𝒆𝒓"Ji-yoo chants and transforms as Ice Knight before attacking the Nebula Bugsters.

Ophelia smiles nervously at Ji-yoo's threat. "He kinda reminds me of Taiga." She murmured as Emu nodded his head. "He's definitely worse."

————————————————————

Zilar and Kanade are assisting Taiga, Hiiro, and Kiriya, as they cannot transform their respective Kamen Riders, only their weapons. Emu and Ophelia update them regarding their world, which is about to merge soon if they won't be able to stop it on time. They're dreadful at the outcome of merging as one to recreate a new world, and Kaisei is oblivious to Moon Knight's power split in half. Zilar suggested he's staying with Kanade because they have Ji-yoo to fight alongside the side, much to his chagrin. The Silver Knight knew his cold, stoic persona and hatred against humans, but Ji-yoo needed to learn not all of them are terrible beings.

"Do you think that fellow Knight of yours will cooperate with them?" Kanade grunted before swinging her spear to slash the Nebula Bugsters.

"I hope he is, Kanade." He switches his sword to bow and arrow before pulling the string as it summons thousands of arrows raining down on the Nebula Bugsters. "We need all the help we can get, especially since Galaxia cannot help now." Zilar created a barrier to the three doctors before they could harm them.

"Ha!" Kanade destroyed the Nebula Bugsters before throwing the spear at them. "Man, this is like having a Pac-Man incident all over again!" She pants heavily while wiping her sweat off.

"This time is much worse, Red." Kiriya agreed with her. "Two worlds colliding... that's a terrible idea."

"To think this guy defeated Mogami... why's Kuroto taking a long time to create a Gashat for you guys?" Zilar couldn't help but ask in annoyance. He's worried that they are getting tired of fighting but willing to give their all to save people.

"We have to do what we can in the meantime!" Hiiro reminded them as he raised his sword and the barrier dissolved.

"You guys are completely worn out." Kanade said worriedly, pointing out their condition. "Let us handle it."

"We appreciate your concern, Idol, but we'll fight." Taiga assured the red-haired woman.

"We promise Galaxia we'll take his place to protect our world as he bent down his rule to save his friends and our home." Kiriya pointed out kindness to save humanity and his friends without asking in return but only for their happiness and joy.

"Guys!" They turned around to see Takeru jump over the railway and show them their Gashats. "These are God's blessings. But the side-effects aren't fully removed..."

Kanade snorts at Kuroto's delusional title. "I still refuse to call him that. To think he's related to Ophelia."

"Brother-in-law to Hiiro." Zilar added while Hiiro glared at them, smirking in his direction.

Hiiro knew at some point that Kuroto would be his half-brother-in-law when he married Ophelia. The genius surgeon respects him slightly for being a half-brother to Ophelia. "I don't need a reminder for that, you two."

Kanade smiled at Takeru. "They'll take their chances if it means to save the people, Takeru." She assured him as they took it from his grasp. "They have us."

"To lend them a hand." Zilar commented and smiled as they transformed into their respective Kamen Rider forms.

Kamen Rider Sniper

Kamen Rider Lazer

Kamen Rider Brave

Nico watched them on the sidelines and smiled as they transformed successfully. "It worked! The Gamer Drivers are working again!" They glitched but overcame the pain as they fought. The female genius gamer shrieked and ducked as the trident struck her way.

Takeru intervened and stopped the Nebula Bugster from hurting Nico. "Even if I can't beat them... Dr Emu and Nurse Ophelia were the ones who saved my life!" He owed them for saving his life when Takeru was in critical condition after defeating the Puzzle Bugster. "So I want to help!" He shoved the Trident before kicking the ribs of the Nebula Bugster. Tekru grabbed the eyeball device and activated it to transform.

"Aye! Watch this!"

"Henshin!"

"Eyes open! It's me! Let's go! Dead set! G-G-Go Ghost! Go! Go! Go! Go!" Takeru lowered his hood before attacking the Nebula Bugster.

————————————————————

Ryuuga is frustrated that his attacks won't work on him, whereas Ji-yoo works effectively on them. Ophelia and Emu are covered in bruises, but they're not giving up fighting to protect people because it's their oath as nurses and doctors to save their lives. The wanted fugitive can see that Ji-yoo is starting to get tired from fighting yet is unwilling to forfeit the battle.

Emu crashed on Ophelia as they rolled over the ground in pain. The genius gamer pants and pushes himself to give Ophelia a space. "Not yet... we're going to find Enigma!" He vowed to find the Enigma and prevent their world destruction, including reuniting with Parado and Luna.

"People... are counting on us... we can't and... never will... shatter their hopes for them!" Ophelia roared and created a hologram sword to strike the Nebula Bugsters.

Ji-yoo's eyes widened at their determination to save their world despite their condition. His heart was beating, and he couldn't understand what emotion was telling him. 'Their bonds...' The disguised detective remembered his memories of himself, Luella, and Enki fighting to protect their home. 'Are unbreakable...' His hand clenches tight in frustration while masking his envy and jealousy.

"They can't even transform... why are they fighting so hard?" Ryuuga couldn't help but ask their reasoning for fighting while he was struggling, asking himself why he became a Kamen Rider.

They felt the ground shaking, stopping their fight. As Ryuuga was about to fall from the hole, Emu, Ji-yoo and Ophelia immediately grabbed his left hand. The wanted fugitive was surprised to see them catch him, especially the ice-hearted crown princes who wanted nothing to do with them. "Let go! You three are gonna die, too!"

"That isn't an option Banjou-san!" Ophelia yelled and refused to let him go while they struggled to pull him up. "You're a hypocrite to think we should save ourselves and abandon you!"

"I despise humanity, and I'm not that low sink to let you go like that." Ji-yoo's grip tightened around Ryuuga's wrist. "I dislike your stupidity, but losing you isn't an option."

"Your words are sharp as ever, Prince Ullr." Someone joined in to pull Ryuuga. "We're going to save you." They turned their head, seeing a man wearing an orange robe. Ji-yoo masked his surprise at seeing him again. "As long as we can reach you!"

Ryuuga screamed, pulling himself up with their help as they saved him from the hole. They panted heavily while Emu couldn't help but glance at the mysterious man. "I'm glad you're okay. Who are you?"

"Thank you for your help, sir..." Ophelia wheezed and leaned on the genius gamer doctor.

"I'm Hino Eiji." The mysterious man introduced himself. "A Kamen Rider, just like you guys. It's nice to see you again, Ullr." He offered his hand to Ji-yoo.

"Likewise to you Eiji." Ji-yoo greeted him and accepted his hand to pull him. "How did you find us?"

"I was investigating all these weird phenomenon. I think Foundation X might be behind it." Eiji explained, staring at the disguised detective. "I'm happy to see you again for years, and I hope the circumstances are better."

"You knew him?" Ryuuga asked in shock, pointing in Ji-yoo's direction while nodding. The wanted fugitive didn't know Ji-yoo had another acquaintance other than Luella and Galaxia.

"Yeah. He is a friend of mine, and I knew he was one of the Knights." Eiji's gaze stared at the dark-lilac-haired woman, and she smiled politely at him. "Your presence... reminds me of a Knight."

Ophelia nodded. "I'm Moon Knight and Eiji-san... why's the Foundation X involved?" She asked curiously.

"They're a global threat. They weaponize the most advanced technology in the world." Eiji answered in a grim tone. "Weapons merchants."

"We're dealing with one of the most dangerous organizations..." The former goddess couldn't help but sigh heavily.

"If you can't handle it, go back or, rather, — return Moon Knight's respective owner." Ji-yoo suggested that if she couldn't handle the mission, they'd be making progress right now.

Eiji smiled nervously and wasn't surprised Ji-yoo's cold behavior hadn't changed for the past few years. He managed to break down his walls with his resilience, and Ji-yoo respected him. He knew the reason for Ji-yoo's behavior and wasn't in his place to expose him. 'Ullr is difficult to get along with because the past still haunts him down... this lady reminds me of someone I know.' He couldn't help but notice Luella's feature strikes someone she resembles from one of his friends.

"No. I don't know why you're against me when I have done nothing to you, Takashi-san." Ophelia frowned at him sadly, felt hurt for getting rejected, and didn't acknowledge her as one of the Knights. "I've experienced for the past few years when I became Moon Knight and fought dangerous enemies that threatened to hurt my family, friends, and innocent people. Don't tell me what to do because what I want or need is not your decision to dictate my life." Eiji and Emu couldn't help but smile at her boldness when talking to Ji-yoo like that.

"She's a spitfire like Luella..." Ryuuga couldn't help but stare at her in shock. The wanted fugitive hadn't known Ophelia for a long time, but he could see the similarities between their stubbornness and selflessness. He could imagine them teaming up would bring their enemies into a world of pain.