BNHA: Just A Passing-By Kamen Rider

CHAPTER 8

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"Ugh, should have gotten more sleep, maybe should have called sick..."

Tsukasa yawned with a drag as he rests his face on his school's table. The testing of his Blackrose Decadriver with the UA staff took so long that he didn't reach home until it was nearing 12.

The faculty kept asking him to switch forms too! So, he showed more than one transformation.

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Yesterday Afternoon...

"So... What am I supposed to do?"

Tsukasa asked out loud as he looked around him. It was a normal gym building from the inside, but on the outside, it looked like he was about to enter a hall made out of marble.

Standing in the middle of the gym, he faced a training dummy that looked awfully familiar to him. He can't place the image, so he shrugged and looked at the group of teachers that stood far from him.

"Oh, just transform into any one of your Kamen Rider forms! I'd like to measure their average statistics to make sure that your hero training will be effective, I have Aizawa and Ectoplasm here to supervise and record your progress, with Midnight just in case anything happens."

The glare Aizawa gave him sent shivers down his spine. Hahaha, he doubts that his homeroom teacher liked him lying about him going all out during the Quirk Apprehension test, huh?

Taking out his rider driver, he placed it in place before taking out a Rider Card from his Rider Booker.

"Ahem, so, this is one of the Kamen Riders from what I call the Heisei Era. There are a good amount of Riders in this era, and the one that I'm going to transform into is one of the more simpler ones in terms of functionability."

Pulling the side handle outwards, he inserted the card into the buckle.

[Kamen Ride...]

"Henshin."

He mutters to himself before pushing the side handles inwards.

[DEN-O!]

A brilliant white light manifested from his Blackrose Decadriver and started to spiral around him and away from him, bits of pieces of armor left behind from the light's trail before the armor pieces converged towards Tsukasa, forming his body armor.

The body armor was mostly black, with small silver-white armor pieces that covered some parts of the head, chest, arms, and legs. What was interesting to note, however, was the train-like railings that trailed on his body perfectly down the middle, the railings starting from his back, and through his head, before ending on his chest.

"This is my Kamen Rider Den-O form, at least in its default mode currently, called the Plat Form. This mode doesn't give much in terms of strength or agility, just body armor that is nigh-indestructible. Yes, I tried."

Twirling his body so that the cameras could capture his suit, he took out another card from his Rider Booker before inserting it into his Decadriver after pulling its side handle.

[Form Ride...]

Pushing the handles in, he lets the energy seep into him as his buckle announces the form transformation.

[SWORD FORM!]

The nostalgic jingle of trumpets echoed around the gym, a bright red light manifesting and spiraling his body before the sound of a train on rails sounded. Bits of red armor pieces were left behind in the trail of the red light before said light stopped at his back.

From his back, a large red peach trailed upwards and slid down to his helmet, before splitting into two and shifting in place diagonally, the sliced peach now resembling eyes. The armor pieces in the air then converged into him, shifting in place to his shoulders, chest, and back.

Dusting his hands off, he gave a playful grin behind his mask as he raised his left hand to point his thumb towards himself, before stretching it outwards with his right hand extended to his side.

"Ore... sanjou! (I... have arrived!)"

Hmm, still gotta work on that, it didn't have the same "oomf". He could learn it, but he definitely did not want to use that card again, it still gives him nightmares to this day.

"Tsk, stop playing around and explain, we don't have all day."

The cold tone of Aizawa caused him to chuckle nervously, what a scary dude.

"Yeah, sorry. Anyways, this form is, like my buckle said, the Sword Form of Den-O. Each form of Den-O has its uses, but Sword Form is the most well-rounded one."

"I see. Would you please start the tests with this form, and then alternate with your other forms? I would like to see what percentages you will increase with this... Kamen Rider form of yours."

Nodding, he stretched his legs as he began warming up for the 100-meter dash.

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In the end, the school tested everything. From normal strength tests to even tests performed underwater. It was honestly a pain in his butt.

"For today's hero basics training, it's turned into a class with three instructors. All Might, me, and one more person."

Aizawa announces as the boy with tape on his elbows asked.

"Excuse me, but what will we be doing?"

The homeroom teacher simply answered by bringing out a card with the kanji "RESCUE".

"Disasters, shipwrecks, and everything in between. That, is rescue training."

Murmurs from the students started before getting silenced by the glare of the pro hero.

"Hey, I'm not done talking. You can decide if you want to wear your costume or not this time, as there are probably features in your costumes that limit your abilities, too."

Pressing a button from the table, their costume suitcases slid out from the wall for his classmates to take from.

"The training will take place off-campus, so we're taking a bus. That is all, so start getting ready. We leave in 20 minutes."

With his piece said, their teacher walked out of the class.

As everyone started scrambling to grab their suitcases and talking amongst each other, Tsukasa couldn't help but give out a big yawn.

So tired, maybe I'll get some shut-eye in the bus.

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The sense of bloodlust caused him to reorient himself back to the real world. With his eyes wide open, he starts scanning the rescue class location, something USJ from what their teachers were talking about.

His eyes darted around the large place before landing on the fountain. A portal made of mist. An arm extends out from it. The bloodlust increasing in pressure. Yeah, this was definitely a villain.

Even Eraserhead saw it, as his hair started floating with his arms moving to his capture tool while Tsukasa quickly equipped his Kamen Rider driver onto his pelvis.

The arm the stretched out of the portal starts to show himself, and boy was he looking horrifying. Arms on his face and around his body? Seriously? The mist portal expands horizontally as more villains started pouring into the USJ.

His eyes scanned each of them. They were cannon fodder at a brief glance, but that... large purple man with an exposed brain. His senses were blaring, yelling that he would have to go to his more powerful Kamen Rider forms if he wanted to fight the monster.

But why though? Surely that villain would have more things to do other than come to terrorize students. No, they could have targeted more important things, his mind just couldn't comprehend why...

All Might, he were supposed to be here.

Ah, it's starting to make sense. The sudden lockdown at school due to the news reporters, it's connected. And it looks so still like a puppet.

Interesting... Jeff, you sweet omnipotent being, he knew that he had some kind of reason for recommending him to join U.A. He always does make things fun.