Kuoh Academy

This is the school where High School DxD takes place, so there are many reincarnators here who wanted to become the hero and harem king.

"Sensei! Is it true that Koneko-chan is hospitalized!?"

He's a pretty boy, and one of the many reincarnators at Kuoh Academy who have been given a special privilege by a god to live in a harem with the heroines and hunt down other reincarnators who interfere with their ambitions.

"Kawahara, how do you know about that!?"

"That's not important! Sensei, is it true or not!?"

"Yeah, two days ago, I received a call from a hospital in the neighboring Seito that Toujou-san is going to be hospitalized for a few days…"

"Thank you very much! I'm in a hurry!"

Kawahara left the staff room without listening to the end of the conversation.

He left the school and ran to the station. His purpose, it was not really to visit his classmate Koneko.

'Koneko-chan is in the hospital, which means the guys from the Occult Research Club must not be with her! Wait for me, Koneko-chan! I'm coming to get you!'

He was planning to kidnap Koneko for his own harem project.

And then…

"Kyaa!"

"Gah! Ah shit! Where the hell are you looking!?" Kawahara yelled and looked at the person who had collided with him. There was a girl with long dark blue hair wearing a Kuoh Academy uniform, and if you asked a hundred people, about a hundred would say she was pretty. And Kawahara knew that girl.

"Ah! You are Saki Onodera-senpai!"

"Geez! You're Kawahara, a freshman."

This girl, Saki Onodera, a sophomore at Kuoh Academy, is not in the original story, but her looks make her as famous as Rias and Akeno at Kuoh, and Kawahara wants her as part of his harem.

"What a coincidence to meet you here."

"Nothing. It's just a coincidence. I'm leaving then." Saki said with a curt smile and tried to walk away from him.

But…

"Wait, I'm actually going to visit Koneko-chan now, please come with me, Onodera-senpai."

'How lucky, I'll get another harem factor besides Koneko-chan.' Kawahara thought, but…

"No, if you want to go, you can go alone."

She refused to go because she hated people like Kawahara the most in the world, and Kawahara had had more than a little trouble with girls from this school and others.

"Why not!? Let's go together!"

Then Kawahara grabbed Saki's arm and tried to take her away by force.

"No! Let me go! Let go—"

At that moment, Saki sat down on the ground, struck by a flashback.

"No, no… stop it…" Saki started mumbling as she held her head, but without caring a little bit, Kawahara grabbed Saki by the arm and tried to take her away. But then…

"Hey, get lost." Someone grabbed Kawahara by the collar and threw him toward the garbage dump.

"Saki, are you okay…?"

"Graphite…"

The young man who threw Kawahara, called Graphite, asked her.

"Fuck! How dare you! You're a mob character and you did this!?"

Kawahara then tried to punch Graphite, but he caught the punch with one hand and kicked Kawahara.

"Hmph! You're no match for me, you should know your place."

"The fuck did you say!?"

He glared at Graphite.

"He's gone… where did he go!?"

Graphite and Saki disappeared from the scene like a puff of smoke.

Abandoned building

"Are you sure you're okay, Saki…?" Graphite asked a trembling Saki.

"I-I'm fine… Graphite… I'm…" She said, but her trembling had not stopped.

'I wonder why…'

Graphite thought to himself. This Saki Onodera, unknown to the other reincarnators and Graphite himself, is one of the reincarnators. After she died, she won the lottery to become a Bugster with human genes as a reincarnation privilege and was reborn into this world. However, since her previous life, she has been a target of many devils and reincarnators who aimed to become a harem king, and her family was killed by a devil when she was 15 years old.

For the next two years, Saki spent her life on the run from the devils and reincarnators that were trying to kill her. One year ago, Graphite rescued her when she was surrounded by multiple reincarnators, and she began to hope to eradicate devils and reincarnators from the world as a Bugster.

"Graphite… leave me alone for a moment…"

"…Alright."

With that, Graphite left the room.

Meanwhile

Seito University Hospital Room

"Err… Koneko Toujou-chan… is that correct?"

"Yes… who are you?"

"I'm Kiriya Kujo, a medical examiner at the Seito University Hospital."

"Seito University… that means this is Seito…"

"Yes, we found you collapsed in an abandoned building yesterday and brought you to this hospital by accident."

"I see…"

In fact, her master Rias had told her that there were mysteries in Seito that even the devil's information network hadn't been able to uncover, so she had been told to stay away from the city. She didn't want to get as close as possible, but she committed a mistake. When she threw the pillar at the stray devil, she thought she had won for a moment and forgot to put up a barrier, so she was badly injured by an attack that should have been prevented, and now she is being transported to a major hospital in Seito.

'I'm going to cause trouble for buchou…' Koneko thought.

"So, can I ask you why you were in that abandoned building?" Kiriya asked.

"Why would you want to…?"

"I'm a medical examiner and I want to know what happened…"

"…I understand."

One hour later

"I see, when you were passing that building, you felt something disturbing, and when you went in and looked, you saw…"

"Yes, I was stabbed by someone…"

After all, she wanted to keep the fact that she was a devil a secret, so Koneko lied to Kiriya.

"All right, thanks for your help, bye."

Kiriya got up and leave the room.

"Wait, are you the one who saved me?"

"Huh? Ooh, no, no, it wasn't me who saved you, it was the Prodigy Doctor, Hiiro Kagami, what about it?"

"No, I just want to thank him… where is this Hiiro-sensei now?"

"He's in the middle of an operation right now, it will probably take about three hours to finish, well, I'll let you know when the operation is over, just make sure you fix your injuries."

With that, Kiriya left the room.

Hallway

"That Koneko girl… what a blatant liar~"

Koneko tried to hide the fact that she was a devil, but her eyes could not deceive him.

"Kiriya-sensei, here's a report on the results of your analysis."

"Ooh, thank you."

The report that Kiriya received was a report that summarized the results of the analysis of the thorns that the stray devil had used as weapons.

"I see… that stray devil's thorns have the ability to temporarily, but drastically, reduce a creature's natural healing ability…" Kiriya muttered, and then asked the doctor who had given him the report, "I need you to do me a favor, can you perform a physical examination on her now and compile the data?"

"Understood."

There was no solid evidence, but Kiriya's sense as a medical examiner told him intuitively that there was something wrong with her.

Four hours later

Two hours ago, Koneko had finished her medical examination and was playing a game by herself (it's Mighty Action X, by the way).

"Hey, it's been a while." Kiriya came into Koneko's room.

"What's wrong?"

"I came to call you because the Prodigy Doctor's surgery is over, and you want to thank him right?"

With that, Kiriya put Koneko in a wheelchair and headed for Hiiro.

Meanwhile, a visitor appeared at the Seito University Hospital.

Receptionist

"Excuse me, I'd like to see Dr. Hiiro Kagami, the surgeon."

"I understand, may I have your name?" The nurse at the reception desk asked, and the person showed her a business card.

"I am Masamune Zaizen, President of Genm Corporation. I have an appointment with Dr. Hiiro at this time."

"I understand, please wait a moment."

The nurse then contacted Hiiro on the line. And then Masamune saw something.

"That's… Bakusou Bike… and Koneko Toujou… other than Bakusou Bike, why is one of the heroines here?" He muttered when he saw Koneko in a wheelchair and Kiriya pushing it.

"Excuse me, I just got off the phone with Hiiro-sensei. He's currently taking a break in the cafeteria, and he said he has another operation coming up, so if it's urgent, he'd like you to come to the cafeteria."

"I understand, I apologize for the inconvenience." Masamune said, heading for the cafeteria.

Cafeteria

After the surgery, Hiiro ate a whole shortcake in the cafeteria to replenish his sugar intake, and at the same time, he was looking at the patient's medical record to prepare for the next surgery.

"Yo, Prodigy, you got a visitor."

"Examiner, and you're the one I operated on two days ago…"

"I am Koneko Toujou, um… thank you for saving me." Koneko said and bowed.

"I was just doing what a doctor should do."

"But I still want to thank you, because you saved my life…"

"…I see."

Hiiro was not particularly happy to hear those words, but he said them bluntly as usual and brought the cake to his mouth. Koneko watched the scene closely.

"…What are you doing, staring at the cake?"

"Do you have a sweet tooth, sensei?" Koneko asked Hiiro.

"Is that bad?"

"No, I just thought it was odd that you have a sweet tooth too…"

"It's not uncommon for people to like sweets… and let me tell you, I don't…"

This is not because Hiiro is stingy, it's just that when Koneko was taken to the hospital last time, she had some damage to her internal organs, including her small intestine and stomach, and even though the surgery fixed the damaged areas somehow, Hiiro predicted that her stomach hadn't healed to the point where she could eat cake yet, based on common sense. But…

"Well, that's okay, Prodigy, let's just turn a blind eye today as we celebrate Koneko-chan's recovery."

With that, Kiriya scooped up the cake with a fork he had brought from the kitchen and fed it to Koneko.

"What the!? What are you doing!? She's not ready to eat cake yet!"

"Well, well, Prodigy, don't be so uptight. Look at this."

That said, Kiriya handed over Koneko's medical examination record to Hiiro, who began to read it. After a while, Hiiro's face immediately changed from anger to confusion.

"This is… what's going on here!? The damaged organs are recovering faster than expected."

"There's no problem… sensei."

"Is it a physical problem? But it's still too fast…" Hiiro mumbled to himself.

"Excuse me for interrupting."

They heard a voice and turned to look in the direction.

"President Zaizen."

"Yo, what's up, president?" Kiriya asked.

"What, you should know this because I called you yesterday, but I'm actually late, I've finished adjusting the Level 3 Gashat, so I came to give it to you."

Masamune then took out two Gashats from his bag.

"The first one is called Giri Giri Chambara, a samurai sword fighting game where each and every single hit can decide victory or death, and the second one, Bakusou Bike, which I'll give to you."

"Thanks, whew… I can finally have a human form," said Kiriya, receiving the Gashat from Masamune.

"Also, Hiiro-sensei, you already have the Level 3 DoReMiFa Beat Gashat, but in honor of your talent for beating the Drago Knight Hunter in one shot, I give you this one. It's called Gekitotsu Robots, and it's robot fighting action game."

"Thank you."

Hiiro took the Gashat.

"Well then, I'm done with you doctors, so I'll take my leave."

With that, Masamune turned to leave them.

Then…

"Umm… are you by any chance the president of Genm Corporation, Masamune Zaizen?" Koneko asked Masamune with a twinkle in her eyes.

"Yes, but… you are?"

"My name is Koneko Toujou… I am a big fan of Genm Corporation games… I'd like your autograph if you don't mind."

Then Koneko handed Masamune the game console she had just been playing.

"Oho, so you're one of our customers, that's good, it's my duty as president to answer to customers who love our company, which one do you like?"

"I like them all, but I like Mighty Action X is my favorite."

"I see… I'm also convinced that game is one of our best games."

Masamune then wrote his name and an illustration of Mighty Action X's main character, Mighty, on the console with a magic pen.

"Thank you very much…"

"No problem. By the way, do you like games so much, Toujou-kun?"

"Yes, I do."

"I see, then I wish you speedy recovery and I'll tell you a secret. We're developing the ultimate game."

"Ultimate game?" Koneko asked, eyes still gleaming.

"Yes, it's a very interesting and exciting game that no one's ever played before. When it's released, come to our headquarters with this autographed console and I'll give you the ultimate game myself."

"Really?"

Genm Corporation's games are so popular that when they release their latest game, all the Genm games went out of stock from the stores within two days of its release. So for Koneko to be able to get the latest game developed by Genm without having to wait in line, and directly from Masamune, the president and creator of the game, is like a dream come true.

"Then, get well soon and see if you can beat that ultimate game."

"Yes."

Koneko replied to Masamune, who then turned to Hiiro and Kiriya.

"You may have a lot of trouble ahead, but stay strong."

After that, Masamune left the place.

'Hiiro Kagami, you've become involved with one of the heroines of the original story, and now that you've done so, you and CR are destined to be involved in a series of world-shaking incidents and events in the future… He's also a major cog in the wheel of this world's story, after all…'

Just as Masamune was thinking, he felt a malicious presence coming from the second floor of the cafeteria and looked in that direction. There was a young boy wearing the uniform of Kuoh Academy who was glaring at Hiiro with obvious murderous intent.

'Oh dear, filths are coming to this Seito… it can't be helped, I guess I'll go back to the office after cleaning this trash.'

With that, Masamune took out his Bugvisor II.

Second floor of the cafeteria

There, Kawahara, a reincarnator who had invaded Seito to kidnap Koneko, was aiming an obvious killing intent at Hiiro.

"Shit! Why!? Why is Hiiro Kagami here!?"

Kawahara was bewildered by the scene in front of him, even as he tried to kill it. The reason for this is that it's not only Koneko that's in front of him, it's also Hiiro Kagami, a character from Kamen Rider Ex-Aid, one of the Kamen Rider series that he liked before he was reborn.

"Don't tell me… that bastard's a reincarnated person aiming for harem king like me!? Damn it! That's so clever! A side character changing his face to that of an actor… I'm a bit of an original character, but I'll make sure you know your place!"

He jumped down from the second floor, aiming for Hiiro.

But at that moment…

STAGE SELECT

As soon as he heard that mechanical sound, the scenery around him changed.

"What!? What the hell is going on!?"

The scene was no longer the modern and clean hospital it used to be, but an abandoned hospital with many broken clocks on the walls and large gears lying everywhere.

"Hey! What's going on!? Hey!" Kawahara shouted.

"You'll disturb the other patients in the hospital, so please be quiet."

"…Who the hell are you!?"

When Kawahara turned his head to the direction of the voice, he found Masamune standing there, who had not been there before.

"I am Masamune Zaizen… a reincarnator just like you, and the one who will eliminate you."

"What the hell!? Don't get too cocky, you piece of shit! Even if you are a reincarnator! Don't think you'll get away with defying me, the OC Lord!"

"Hehehe… why do you reincarnators have to be so vile, brainless, unproductive, and downright piece of trash… well I guess a trashy god reincarnated trashy people, so it is to be expected."

"Grr! Dammit! I'll show you!"

He then took out a pocket watch shaped item from his pocket, turned the frame and pressed the switch.

Zi-O!

"Oho, so your reincarnation bonus is Kamen Rider Zi-O, huh…"

"Yeah, I drew a lottery and this is what I got, proof that I'm the OC Lord!"

Kawahara then set the Ridewatch on the right side of the Ziku Driver. A clock ticking sound began to play, and at the same time, the belt unlocked, and Kawahara began to take a transformation pose.

"Henshin!"

He spun the Ziku Driver.

Rider Time! Kamen Rider~ Zi-O!

Kawahara's form transformed into the King of Time, Kamen Rider Zi-O.

"Hahahahahaha! This is me, the Original Character Lord of this world, in my true form! With this power, I'll become the Harem King! What do you think!? If you apologize now, I'll hire you as my servant!" Zi-O said to Masamune smugly.

However…

"But I refuse, like hell I will follow a scum like you…"

"Ha! Well then, come at me! I, the OC Lord, will decide your fate myself!" Zi-O declared, pointing at Masamune.

"Pfft… hahahahahaha… judge my fate, you say…? Don't make me laugh, a piece of shit like you can't judge the fate of others. It's not you who judges fate here… it's me…"

Gachan!

Masamune then attached the Bugvisor II to his waist and used it in driver mode. Then Zi-O, who had been so smug earlier, blanched.

"Bugvisor…?"

After attaching the Buggle Driver, Masamune then showed his Gashat to Zi-O, whose face froze when he saw it.

"K-Kamen Rider Chronicle Gashat… no way, you bastard!"

"Now it's the time for judgment."

KAMEN RIDER CHRONICLE

As soon as he activated the Gashat and the announcement has been heard, Masamune let go of the Chronicle Gashat and pressed the A button on the Buggle Driver. Then, with a standby sound, the Chronicle Gashat floated by Masamune's side and was automatically inserted into the Buggle Driver.

Gashat

"Henshin."

Masamune then pressed the start switch on the Buggle Driver.

Buggle Up! Ten wo tsukame Rider! Kizame chronicle! Ima koso toki wa kiwamareri!

A panel appeared directly above Masamune, and as the panel passed from top to bottom, a green flash of light enveloped him, then the flash dimmed and a vision of a clock appeared behind him, and Masamune's appearance changes to that of Kamen Rider Cronus, the rider who bears the name of the god who controls time.

"Kamen Rider… Cronus…" Zi-O muttered in a half-despairing voice.

"Now, resist my grasp all you can, marionette…" Cronus said in a mocking tone.

"Damn it! What are you, Cronus!? You're only a dark rider! You're just a stepping stone for me, the master!"

With that said, Zi-O summoned the Zikan Girade and charged straight at Cronus.

"Charging like an idiot… heh."

Gachon!

Cronus attached the Bugvisor to his right arm, changed from Driver Mode to Beam Gun Mode, and rained beams down to Zi-O, who came at him like an idiot, then jumped into his opening and punched and kicked him while he was frightened.

"Dammit! This isn't going to end like this!"

He took out his Build Ridewatch and tried to activate it, but…

"I won't let you."

Gachan!

Quickly, Cronus changed to Chainsaw Mode and attacked Zi-O relentlessly before he could set his Build Ridewatch, which caused Zi-O to let go of his Ridewatch.

"Shit! It's not fair of you to attack me before I transform!"

"There's no such thing as fair in battle, only victory matters!"

Cronus then slashed at Zi-O with his Bugvisor.

"Not gonna happen!"

Zi-O quickly tried to block Cronus' attack with his Zikan Girade, but…

SKREEEEEEEEEE!

"It's broken!?"

The Zikan Girade was destroyed in half by a single blow from Cronus, and at the same time, Zi-O was blown away by Cronus' attack.

"Damn it… I… the Lord…"

Zi-O staggered and tried to stand up. As he did so, Cronus turned the Bugvisor back to Driver Mode and turned to Zi-O.

"I'll give you one last chance… if you never transform into Zi-O again and live a normal life, I'll give you a special discount on your discontinuing…"

"Huh!? Why you!"

His words were a reprise of what he had said earlier, but the difference was overwhelming and he knew he had no chance.

"All right… I promise…" He said.

"I see, fine, I'll let you go."

And with that, Cronus turned to leave… but then…

"Hmph, dumbass! Anyone who stands in the way of my harem king's ambition must die!"

Zi-O grabbed the broken end of the Zikan Girade and threw it at the back of Cronus' head.

But…

"Heh, what an idiot."

PAUSE

Cronus pressed A and B at the same time, activating Cronus' most powerful move, the Pause, and stopped time…

"It was quite idiotic of you… to ignore your last chance…"

Cronus then hit the B button twice in quick succession.

Kimewaza, CRITICAL CREWS-AID!

A huge clock-shaped hologram appeared at his feet, and as the hands of the clock turned, Cronus' spinning kick slammed on Zi-O.

Shuen no ichigeki!

And finally, Cronus declared to the idiot reincarnator who had transformed into Zi-O.

"Kamen Rider Zi-O is now discontinued."

RESTART

"AAAAAAAAAAAAAAAAAAHHHHH!"

As soon as he released the Pause, the damage from the finisher that Cronus had unleashed shook through Zi-O's body, forcing him to untransform.

"Impossible… I… the Lord…"

BOOOOOOOOOOOMM!

Kawahara exploded, and all that was left was his reincarnation gift, the Ziku Driver, and Kawahara was literally discontinued from this world.

"What an amusing opponent you were." Cronus said, collecting the remained Ziku Driver and returning to the Genm Corporation.

Notes

Saki Onodera (17)

A second year at Kuoh Academy, a girl with one of the best looks in the school, but her true identity is that of one of the reincarnated by the gods to pass the time, and the privilege is to become a Bugster with human genes. However, her new life has been one of the worst. From the first year of junior high school, she was spotted by a reincarnator and a high-ranked devil who wanted to become a harem king because of her looks, and her parents were killed by the devil when she was 15. One day, after two years of running away from reincarnators and high-ranked devils, she was surrounded by reincarnated devils and was rescued by Graphite, the leader of the Bugsters.

In her previous life, she was a girl, but she was a Kamen Rider fan, so she knows a lot about Kamen Rider.