Idol! Kamen Rider! An Unknown Combination? (Part 2)

"Take a look! Genius physicist is having a clearance sale at a loss! You'll regret it if you miss it!" Wearing Yae Miko limited-edition Yae no Kamiko skin, Yuki is acting as the mascot at the stall jointly owned by Sento and Ryuga. Ryuga watches the throngs of customers and silently wonders if his previous inability to sell anything was his fault.

"Hey, Ryuga! What's your relationship with this vixen?!" Ryuga's girlfriend stormed over, grabbed his ear, and demanded an explanation.

"I'm innocent! I just asked her to come and help!" Ryuga cried out, but his girlfriend just wouldn't believe him.

There's no way around it, anyone would have dirty thoughts if they saw their boyfriend with another woman who is almost perfect in looks. I feel Ryuga and the future Kane for three seconds.

Oops, I think I've given away a spoiler. Ahem, let's rewind a bit...

——Love Gate——

(Su is currently locked inside the World Bubble created by Thousand Worlds, and is trying to find the password there.)

"Yes, the seniors are really amazing. They were able to defeat such a powerful alien monster. Although I feel that Evolut was too reckless."

At Nascita coffee shop, Sachi received Soichi Isurugi. After taking a sip, he couldn't help but exclaim, "Wow, this is really delicious! It's no exaggeration to say that it's beyond human comprehension!"

"Haha, little sister, you flatter me. Young people really know their stuff." The shop manager laughed heartily, but his face darkened when he saw the three jerks who frequented the shop but only drank canned coffee. He glared at Kaito, who had snatched his daughter, and then carried the tray away.

Looking at the poster of Taro Sato on the wall, the shop manager really seemed to like this DJ. However, the face that looked exactly like Sento's was quite distracting. Although Sento had plastic surgery to resemble him, it still looked rather awkward.

"Ah, I think so too. That bastard always acts like he's got the game in the bag, but he's definitely brave and resourceful. Our victory definitely had an element of luck in it." Gento said honestly. He remembered the time when he destroyed the Black Hole Trigger. He had clearly said he was going to pull the trigger, but that guy didn't stop him at all. He probably thought he didn't have the strength. Who knew that after his idealism kicked in, Evolut would regret it to the core.

"And that guy is absolutely despicable!" As the biggest victim, Ryuga had a lot to say. "That guy implanted his genetic material in me, erased Sento's previous memories, and possessed Miku's father's body, intending to cultivate us as tools for him to regain his strength! But the coffee that guy makes is really awful, it's given me a psychological aversion to the coffee the shopkeeper makes now." Ryuga said, taking another sip of canned coffee. The shopkeeper, hiding behind, saw this and his eyes were full of resentment.

Kaito slammed his fist on the table indignantly. "And that guy's vitality is stronger than a cockroach! We've killed him several times, but he always manages to reappear in front of us unharmed. Last time, in order to defeat his brother Killbus, Sento was forced to revive him. After defeating Killbus, he went on a space trip. I hope that guy doesn't come back. I don't want to fight that snake-skin monster again."

"But, Little Sister Luming is really amazing. According to you, even with only the initial Build System, you were able to defeat Grease and Rouge in your world. Sento only won because of the Danger Trigger." Seemingly bewitched, Kaito sat down next to Sachi and, seeing the still-childish girl, couldn't help but pat her head. "By the way, how old are you this year? You're not an adult yet, are you?"

Kamen Rider are usually adults, so this one can't be a kid, right?!

PS: This excludes 4Z and those special cases.

"Hmm... 16 years old, I guess. In my world, there's a disaster called 'Honkai,' and many kids my age, or even younger than me, take up arms very early, so don't be surprised." Sachi didn't feel disgusted by Kaito's head pat, after all, it was a sign of concern from an elder.

My physical age is 11, but my mental age is already 19!

"Valkyrie? Little Sister Luming's world is really full of misfortunes... Sento will be alright?!" Ryuga felt sympathy for her plight and was also worried about his partner.

"It should be fine. In my world, Build's genius form is comparable to Herrscher of Reason Plus. Besides, with Sento- senpai's abilities, creating a world-traveling device to return here shouldn't be too difficult. I'm a little worried that my partner might clash with him..." Sachi clasped her hands together and earnestly prayed for Kane: "Love Gate, I hope Sento will go easy on me."

Meanwhile, the Honkai World—

As the sun sank below the horizon, Tesla wiped the sweat from his brow and excitedly pounced on the little yellow car. "After a whole afternoon of work, it's finally done! Bumblebee, transform!"

Sento reminded him, "Doctor, the battery is not plugged in."

Tesla blushed slightly. "I, a genius, already know! Do you need to remind me?"

The Fire-Chasing Squad, who had been waiting nearby for a while, came over and curiously examined the seemingly ordinary little car. It can transform? I can't tell.

Tesla picked up a remote control from the test bench and explained, "This is the initial stage; artificial intelligence hasn't been implemented yet. You can only issue commands to it through this remote control. We've initially solved the problem of the car transforming into a person. We'll address the rest later. Now, open your eyes wide and witness this epic moment!"

THE BEE TRANSFORM!

Excitedly, she pressed the transformation button, and the yellow sedan immediately began a series of complex transformations. Under the excited gazes of the crowd, a yellow and black mechanical warrior slowly stood up in the ravaged laboratory, its mechanical eyes scanning its creator. "Hello, Dr. Tesla."

"Hey, hello, hello. Although I didn't implant any artificial intelligence, I still added some simple dialogues." Dr. Tesla wiped away the tears that streamed down his face from excitement and proudly introduced himself to the Fire-Chasing Squad.

"Hey, what's this button for?" Sento had just taken the remote from Tesla, noticed a red button among a bunch of buttons that didn't have a standard purpose, and pressed it out of curiosity.

"Stop! Don't press it!" Tesla turned around quickly, but it was too late.

Bumblebee's blue eyes instantly turned red, and a cold, mechanical voice announced, "Self-destruct countdown, 10, 9, 8..."

Bronya raised her prepared field shield and couldn't help but complain, "Not surprising at all. No matter what this Lobster Doctor does, he always manages to cause an explosion, and he even calls it 'explosion is art.' If he keeps going like this, Miss Ende won't sponsor us anymore!"

Upon hearing this, Sento sighed, transformed into his dual-tank form, hoisted Tesla onto his shoulder, and quickly hid behind the Fire-Chasing Squad. "I told you before not to add these kinds of meaningless functions, why didn't you listen?"

"Even this genius didn't expect anyone to press the button!" Tesla was on the verge of tears, and could only watch helplessly as the Bumblebee, into which he had poured his heart and soul, started its self-destruct sequence.

"3, 2, 1, initiate self-destruct sequence." After uttering these last words, Bumblebee's eyes dimmed, and its massive mechanical body collapsed heavily to the ground.

"No!!!" With Tesla's heart-wrenching cry of pain, Bumblebee lay quietly on the ground, motionless.

Half a day later—

Kiana poked her head out from behind the shield, looked at the Bumblebee lying on the ground waiting, and said in confusion, "Hey, why hasn't it exploded yet?"

Bang!!!

A wrench struck her mercilessly on the head. Tesla pushed the white fluffy ball aside, letting the Sento stand in front of her, and slowly approached. She disassembled Bumblebee's control panel, and after a careful inspection, she discovered something embarrassing:

"Oh dear, it's probably because I miscalculated the data when installing the circuit here, and the wires just happened to burn out, which is why it didn't self-destruct successfully."

Fortunately, unit number one was saved.

While everyone was celebrating Bumblebee's escape, Sento, who had been pushed aside, glanced to the side and caught a glimpse of a white-haired boy standing there quietly, as if he had been there all along.

Sento blinked, and in that blink, the boy disappeared.

"Huh, am I hallucinating because I overused my eyes this afternoon?" The genius physicist rubbed his eyes, suspecting it was just due to fatigue.

—The author is a Bumblebee enthusiast, and I also like Optimus Prime—

After grabbing a coffee and some food from Kaito's restaurant, Sachi said goodbye to the manager and left.

Mr. Shi Dong smiled as he watched his daughter, the three silly boys, and the discerning customer disappear from his sight. Just as he was about to return to his business, a customer ran out and complained to him, "Manager, what's wrong with you today? The coffee you made is awful! It's not fit for human consumption!"

"I'm so sorry, I'll get you a new cup." He patiently reassured the customer, then took a sip of his own coffee. "Hmm, after traveling in space for so long, my skills have improved quite a bit."

"However, I originally just wanted to come back quietly to visit Sento and the others, but it seems I've discovered an unexpected surprise."

Soichi Isurugi's eyes glowed red, and sunlight shone on him, but the shadow cast on the ground looked completely inhuman...

In the warehouse where Sento and Ryuga live together—

Ryuga looked at the girl busily working in Sento's seat and asked curiously, "Sento is a genius physicist. What achievements have you made in this field? You must be some kind of genius girl or something, right?"

"Well, I can indeed be called a genius, but in physics, the professor only taught me a little bit. I just wanted to see if Mr. Sento left any information. Please don't have any illusions about me." Wearing glasses and a white lab coat, Sachi stared intently at the screen, her jade-like hands typing rapidly on the keyboard, almost leaving afterimages.

"That's true. After all, she's not the inventor of her own world's Build, and she's just a child. We can't expect too much from her. But what about Sento?" Kaito was a little worried. It would be difficult if no one made new power-ups for them in the future.

Ahem, Kaito said that he was more concerned about his good brother Sento; cheat codes and such were just external things.

"Sento will be fine. Maybe he'll come back on his own someday." Gento wasn't worried at all; he had a lot of faith in his former subordinate.

"Hmm, we've reached a conclusion." Xing stopped what she was doing, took off her glasses, and revealed her bloodshot heterochromatic eyes.

"Have you found a way to get Sento back?! ×4" The three idiots Miku rushed over, only to see the girl slam her keyboard down and yell in despair, "What is this thing she wrote? Too many technical terms! And no footnotes at all! I can't understand it at all!!!"

Ryuga, Miku, Kaito, and Gento: "..." Sento, this is your fault, don't blame us.

Miku slumped back down dejectedly. "Ryuga, where's your bed? I'm sleepy, I want to take a nap."

"Oh, that's the steel plate over there."

"... I think I'll go home and sleep. By the way, Little Sister Luming doesn't have anywhere to go here, does she want to come back with me?" Kind-hearted Miku extended an invitation to Sachi.

"Thank you, but never mind. I'm capable of living on my own." Sachi declined Miku's invitation and turned to Ryuga: "By the way, senpai, I'm truly sorry for the trouble I've caused you. Is there anything I can help you with?"

"No problem! But if you want to help..." Ryuga glanced at the pile of unsold scrap metal in the corner of the warehouse, "It seems like we do have some."

Let's go back to the present—

"Please line up in an orderly fashion and buy one at a time." The Miko smiled and waved her ceremonial staff, managing the chaotic scene. "Also, this Miko is not for sale, so please don't come up and ask about the price. Otherwise, the person lying on the ground will be a perfect example~"

The half-dead, overweight man lying on the ground said he only wanted to flirt a little, but before the silly boy next to her could even make a move, he was beaten half to death by this seemingly delicate young girl. Flirting has its risks; hooligans should be careful!

Ryuga originally thought that cute girls would attract customers, but he didn't expect Sachi to be so dedicated. She even changed her clothes. The customers who were attracted almost trampled him to death. Today, she sold out all the stock that had been piled up. Sento will probably be overjoyed when he gets back.

Unfortunately, what those people recognized was not his invention, but rather...

Ryuga stole a glance at the diligent Fox-Eared Miko hawking her wares. After changing her clothes, she was completely different from before. And what was with this little girl? She was clearly just a child, yet she kept radiating such a strong allure, making him want to commit a crime!

Hold it in, Banjou Ryuga! You're Kamen Rider Cross-Z! And you already have a girlfriend! How can you do this to Sento... no, to your girlfriend?!

"Hey, Ryuga! What's your relationship with this vixen?!" His girlfriend, who had suddenly appeared, grabbed his ear angrily and questioned him sharply.

Speak of the devil, and he appears; now my Banjou Ryuga might need to consider how to save his life.