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Published:
2023-11-24
Updated:
2026-04-28
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28,545
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11/?
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A trip to Yokohama's school

Summary:

A group of ten students from Class 1A of UA, along with their homeroom teacher, were sent to APM, a mysterious school located in Yokohama. The purpose of their visit was to foster cooperation between the two schools.

Upon arriving at APM, the students find themselves encountering a diverse array of peers and faculty members who exhibit unusually peculiar and potentially hazardous behavior. In the face of these unfamiliar and potentially dangerous circumstances, the Class 1A students must find a way to effectively collaborate and navigate their surroundings.

How will they live (survive) this place in a month? Come and find out!

Notes:

Okay, I didn't know what the heck I was writing to be honest. I wrote this fic because I rarely see any BSD school fic that crossover with MHA, so I think what if I creat this? It gonna be interesting, so yeah, now am here writing this. And even tho I rarely watch MHA, I still have basic knowledge about the characters so yeah, they won't OOC much.
But again, the main cast for this fic is actually the 2nd-years that include Dazai, Chuuya, Kunikida, Jouno, Tecchou, Sigma, Nikolai and Fyodor! The story is more around them and how they doing reckless things or stuff to the poor class 1A!

(See the end of the work for other works inspired by this one.)

Chapter Text

☆° ゚゚°☆゚°☆☆° ゚゚°☆☆° ゚゚°☆☆° ゚

Shivering slightly in the brisk autumn breeze, Jouno tightened the scarf around his neck as he settled on the bench outside the dormitory. Nestling his palms inside the cozy fur coat for warmth, he found solace in watching the crimson leaves gracefully descend from the trees.

Although Jouno despised everything associated with the cold, he had developed a peculiar fondness for spending time under the chilly gusts, particularly when nursing a hangover. Somehow, the cool air seemed to expedite his recovery, helping him regain sobriety faster.

Having consumed an entire six barrels of beer the previous night, Jouno was relieved that his resilient body managed to rouse itself from slumber and allow him to venture out for breakfast. Otherwise, the first sight his friends would have beheld upon awakening would be his lifeless form sprawled on the floor—a victim of a fatal slip and head injury.

"Alright, let's not dwell on that too much. Just enjoy the refreshing breeze for now," Jouno mused to himself, determined to savor the present moment.

♫♬♫♪ In a world persistently resonating with "tick-tocks," over and over again,
We confront heartless words and boisterous voices,
Even if tears well up,
I believe that together, the two of us
Could discover simple happiness ♪♫♫♬♫

Startled by the sudden melody, Jouno realized it was emanating from his phone. He recollected that he hadn't yet changed the ringtone set by Nikolai, and he let out a resigned sigh as he retrieved his phone.

Glancing at the screen, he noticed that the caller was none other than Oda-sensei. Perplexed, Jouno couldn't fathom why his teacher would be calling him, considering that Oda-sensei had appeared occupied with something earlier in the day. Why would he be contacting him now?

Pressing the "answer" button, Jouno brought the phone to his ear. "You called, Sensei?" he croaked, his voice husky from the lingering effects of the alcohol.

"Hmm? Your voice sounds a bit off. Is everything all right?" Odasaku's voice carried a hint of concern as he inquired about Jouno's well-being.

"Ah, it's nothing, Sensei. I just haven't had a chance to drink some water yet... So, I'm a little parched. But don't worry, I'm fine!" Jouno reassured him, hoping to alleviate any worries that might have arisen from his husky voice.

"Are you sure?" Odasaku's tone remained skeptical, his concern lingering.

"Yes, Sensei, I'm sure! I'm perfectly fine!" Jouno tightened his scarf once again, the cool breeze reminding him of the need for warmth. As he adjusted the scarf, he couldn't help but shiver slightly.

"If you say so. Oh, I almost forgot, could you come to my office for a moment? There's something I need to discuss with you in person," He requested.

"Of course, Sensei. I'll be there in 10 minutes," Jouno replied, wondering about the reason for this unexpected summons. However, he decided not to dwell on it too much for now. Whatever it was, he would find out soon enough when he arrived at the office.

"Okay, I'll hang up now. Just a heads up, be careful on your way here. The floor was just cleaned, so it's a little slippery," Odasaku advised before ending the call.

Jouno returned his phone to his coat pocket and rose to his feet. He took a moment to stretch his back before setting off towards the teacher building, keeping Odasaku's warning in mind as he navigated the potentially slippery floor.

゚°☆☆° ゚゚°☆☆° ゚゚°☆☆° ゚゚°☆☆° ゚゚°☆

Jouno knocked on the door to announce his arrival and opened it after hearing a voice from inside saying, "Come in."

As he stepped into the office, Jouno was taken aback by the scene that greeted him. The room was filled with nearly half of the teachers in the school. He also noticed a man with raven hair sitting next to Ranpo-sensei, and a group of teenagers standing behind him, totaling around ten people.

"Are they having some sort of meeting? Or maybe a party?" Jouno wondered to himself, feeling skeptical about the unexpected gathering. Despite his hesitation, he proceeded inside as his homeroom teacher, Ranpo, waved him in.

Approaching the table where the teachers were seated, Jouno stood before them, his gaze falling on Odasaku, who occupied the central seat.

"I'm here, sensei," Jouno stated, silently grateful that he had managed to drink a cup of water before arriving. Otherwise, the dryness in his voice would have undoubtedly revealed that he had been drinking.

"Thank you for coming, Jouno-kun. I appreciate it," Odasaku said, his hands clasped together as he focused his gaze on Jouno. He continued, "The reason I called you here is to introduce Aizawa-kun and his students to their accommodations. But before you ask any questions, I have someone who will explain everything to you."

Odasaku halted Jouno from speaking and turned his attention to Ranpo, who seemed unperturbed, munching on snacks as if nothing else mattered.

"Hm? Oh, right. The man with raven hair next to me is Aizawa Shouta. He's a Pro Hero and a teacher from UA, the prestigious Hero school in Japan," Ranpo paused his snacking to pose a question to Jouno.

"Yes, sensei, I'm aware," Jouno replied, already piecing together the situation from Odasaku's earlier words. These teenagers were going to stay in their dormitories. Oh, dear God, please help us. Jouno could already sense the impending chaos that would unfold.

"So, they'll be staying with us for a month, and Odasaku and I have agreed to accommodate them in Chuuya's dormitory since it's the only building with available rooms," Ranpo stated casually, tossing a chip into his mouth. Aizawa raised an eyebrow at Ranpo's peculiar behavior but chose not to comment on it.

"Initially, I intended to call Sigma, but strangely enough, when I tried reaching out to him, he didn't answer. Even Chuuya didn't pick up his phone, which led me to call you," Odasaku explained, his expression pensive. Unbeknownst to him, Jouno's back was drenched in sweat upon hearing those words.

Ranpo let out a playful whistle, further adding to Jouno's misery. He was well aware that Ranpo-sensei had likely caught wind of the impromptu drinking party they had thrown the previous night. Fortunately, Ranpo-sensei was always too lazy to report such matters, granting Jouno another day of reprieve.

"I think the reason they're still sleeping like logs in their beds is probably because we stayed up late playing games," Jouno fibbed effortlessly, intentionally avoiding Ranpo's disapproving gaze.

"Is that so? Well, in that case, you guys should probably stop doing that. I understand that you're happy to have a day off, but staying up late still has its drawbacks," scolded Odasaku. His concern for his students' health outweighed everything else.

"I'm sorry, sensei. We won't do it anymore!" Jouno bowed his head sincerely, truly feeling remorseful.

Ranpo, well aware that Jouno was feigning remorse, chose not to point it out and continued munching on his snack. On Ranpo's left side, Mushitarou poked him, craving a share of the snack after seeing Ranpo eating.

Ranpo lightly smacked Mushitarou's hand away and discreetly hid the snack in his coat, prompting an offended sound from Mushitarou. In response, Ranpo cheekily raised his middle finger. Unbeknownst to them, the teenagers standing behind Aizawa witnessed the small commotion.

Midoriya and Todoroki found themselves pondering if the teachers in this school were always like this, but they couldn't deny that it was interesting. Iida, on the other hand, was taken aback by the teachers' childish behavior.

Bakugo, arms crossed, clicked his tongue and didn't particularly care whether the teachers acted childish or not. He was solely focused on assessing the strength or weakness of the students in this school, and he eagerly anticipated putting them to the test.

"Alright, now that everything's settled, Jouno, please take these kids to the dormitory." Odasaku coughed slightly, pausing his scolding of Jouno and returning to the topic that prompted his summoning.

"Understood, sensei." Jouno replied, offering a slight bow to bid farewell to the teachers before exiting the office. Following Aizawa's instruction, the group of 1A students gathered their suitcases and followed Jouno out.

"Now, let's get back to the point, shall we?" Ranpo suddenly interjected after the students had left. His playful demeanor vanished, replaced by the seriousness he exhibited when solving a case.

"Of course," Aizawa responded, turning back to face Ranpo, his expression growing serious as he made eye contact with him.

☆° ゚゚°☆☆° ゚゚°☆☆° ゚゚°☆☆° ゚゚°☆☆° ゚゚°☆

"Follow me." Jouno immediately exclaimed upon seeing everyone gathered in the hallway. He began walking, with a group of teenagers trailing closely behind him.

"Um, Jouno-san...?" Midoriya hesitated, his curiosity getting the better of him.

"Yes?" Jouno responded casually, adjusting his scarf. 'I should ask Nikolai to fix this scarf for me, it's too loose..' he thought to himself.

"If it's alright, may I ask about your quirk?" Midoriya asked, his voice tinged with excitement. His friends, including Bakugo, leaned in, eager to learn more about Jouno.

"My quirk? Oh, um, I have the ability to manipulate and disintegrate my own body into particles, allowing me to slip through small spaces.." he replied. Jouno had a hunch as to why these aspiring heroes were gathered here in the first place.

Deep down, Jouno held a disdain for heroes and their society. He had been raised by his uncle, who served as a militant for the government. Despite his uncle's role in protecting the land from external threats, he was often labeled as a "vigilante" by those Pro Heroes. The audacity of it all infuriated Jouno.

Although the sight of these young heroes made him feel sick, Jouno didn't bear any particular hatred towards these kids. After all, they hadn't done anything yet. His resentment was solely reserved for those who dared to use that ugly term to describe his uncle.

However, Jouno couldn't help but feel irritated by the blond-haired guy, who resembled an angry Pomeranian and looked down on Jouno due to his perceived weak quirk. Rolling his eyes, Jouno chose to disregard the confrontation. Engaging in an argument with such a dimwit would only lower his own standards. Instead, he found himself more willing to converse with the broccoli-haired guy and the individual with white-red hair, both of whom reminded him of Atsushi and Akutagawa - one cheerful yet shy, and the other quiet but well-behaved.

"Wow, that's so cool! You can slip through anywhere?" Midoriya exclaimed, his excitement evident as he wished he had his notebook to jot down every detail.

"Yes." Jouno replied calmly.

"Even through spaces as small as 2mm?" Yaoyorozu chimed in, intrigued by a quirk she had never heard of before. From her perspective, it seemed incredibly convenient.

"Yeah, essentially.." Jouno responded. He couldn't help but notice the resemblance between the black-haired girl and Gin, Akutagawa's younger sister. Was her name something like Yaoyo? Well, he could ask later if he cared enough.

"If I had a quirk like that, I could easily skip class without anyone knowing.." Kaminari remarked, his voice filled with admiration. Jirou rolled her eyes at him, resisting the urge to smack him once again, while Tsuyu watched the exchange and sighed at the antics of these two.

"Skipping class is not an approved behavior for aspiring heroes, Kaminari! You should know better!" Iida declared, his hand making a chopping motion.

The blue-haired individual reminded Jouno so much of Kunikida, who was incredibly strict about everything. Could this be Kunikida's long-lost brother or something? The thought crossed Jouno's mind briefly before he dismissed it as mere coincidesensei.

As the group proceeded towards the dormitory, a relaxed and conversational atmosphere enveloped them, fostering a comfortable environment for everyone. While some members of the group were intrigued by the potential knowledge and experiences they could gain at the school, others, such as Todoroki and Bakugo, couldn't shake the feeling that something significant or suspicious was on the horizon.

゚°☆☆° ゚゚°☆☆° ゚゚°☆☆° ゚゚°☆

Oh, and if you guys don't understand how the relationship between BSD characters in this fic. I can write a bonus chapter to explain it for you guys.
For example : What relationship Mori and Dazai have?