So this is the "second part" of the Island chapter, except the idea kind of got away from me, so I'm going to be working on an Extended for this chapter.

"And I would like to welcome the newest member of our staff," Nedzu said as the students stood quietly for the Entrance Ceremony, "Izuku Midoriya, who will be taking the position of Quirk Theory Teacher for both the Support and Hero Courses of all years! Please give him a friendly welcome!"

The teen walked up to the podium, bowing slightly to the Principal as the chimera hopped down off his stool. The students began whispering to each other as the boy took a deep breath, seemingly calming himself down before he smiled brightly at them.

"Hello, my name is Izuku Midoriya," he said, "And I'm sure you're all wondering about my age. That is not really a matter of importance. Instead, I hope you will treat me the same way you would any other teacher. Thank you."

"As Midoriya-sensei has just said," Nedzu continued as the teen walked back to his chair, "As students of UA, you will treat him with the same respect you afford all of your teachers. Now, I believe we can wrap things up here! Have a good year everyone!"

"Where were 1-A and their teacher during the Entrance Ceremony?" Izuku asked as the staff walked back to the staff room, several splitting off to go attend to their classes.

"Oh, he was probably hazing his new students, Midoriya-kun," Midnight said cheerfully as she petted him on the head, "Don't be surprised if there are empty seats when you have your first class."

"Kamaya-sensei," Izuku said, making the woman blink at the stern look he was giving her, "I may be younger than all of you, but that's no excuse to treat me like a child. I earned my teaching degree for a reason, you know. Please refer to me appropriately."

"Oh! I…I'm sorry, Midoriya-sensei," the woman said, a slightly shocked expression on her face, "It's just, you're the same age as our first years, so it's a little…"

"Disconcerting?" the teen asked, nodding to her, "I understand, but the students will never be able to respect me if not even the staff can."

"It's a fair point," Vlad King chuckled behind them, "I'll make sure to drill it into my class's heads that you're a teacher here, and that they should respect you."

"Thank you, Kan-sensei," Izuku said politely.

"Just call me Kan, Midoriya," the burly man laughed, "I only got my Teaching diploma last year as well, so we're both new to this."

"Then you can call me Nemuri!" Midnight chimed as she leant over slightly, winking at Izuku as the teen blushed slightly.

"I would prefer not to, Kamaya-sensei."

"Aw, no fun!" the woman pouted.

"Okay, first class," Izuku sighed, taking a deep breath as he stood outside the door to 3-A, "They're third years, so they should be mature enough to respect you. And they're only two years older than you. And you're a teacher! At UA! So, they need to respect you!"

Izuku took another breath as he slid open the door, the class quieting as he stepped inside. The teen looked around, eyes lingering on three students in particular as he recognized them from the student profiles Nedzu had given him. Standing up a little straighter, Izuku walked into the room as confidently as he could, setting his tablet down on the podium as he looked out over the class.

"Good morning, class," he said, keeping his voice as steady and level as possible, "My name is Izuku Midoriya. You may refer to me as Midoriya-sensei, and I will be your teacher for Advanced Quirk Theory this year."

"The first-year classes are on the ground floor!" someone called, making the class snicker slightly, Izuku taking a sharp breath in.

"I am perfectly aware of that, Itazura-san," Izuku replied, the boy in the back paling slightly at the mention of his name, "And you now have detention during Practical Heroics today."

"What? Why?" the boy shouted as he stood, staring at the teen in shock.

"For misbehavior," Izuku replied flatly, "And detention for the rest of the week for talking back to a teacher."

The class fell silent as the stunned student fell back into his chair, a look of disbelief on his face.

"I would have preferred that our first interaction had gone more amicably than that," Izuku said, "I would prefer to foster respect between both sides. However, if I have to use my authority to ensure that this class goes smoothly, I will."

The blonde's hand shot up, Izuku nodding towards him.

"Sensei, no offense, but how can we be sure you're qualified for this position? You are quite young," he asked, giving Izuku a knowing look as the green-haired teen smiled, tapping on his tablet.

"Well, Togata-san," he replied, turning to the state of the art interactive board that he'd insisted on being installed in every classroom as it suddenly burst into life behind him, showing a number of images, "Despite my age, I have earned my PhD in Quirk Theory, have worked with multiple Heroes as a quirk analyst for several years, including your Mentor, Sir Nighteye, and All Might, and," Izuku paused for effect as he looked back over the class, "I was personally chosen by Principal Nedzu."

The class stared at the images that appeared, Izuku standing beside numerous Pro Heroes, many shaking his hand. An image of his Doctorate sat in the top corner the entire time, as several of the patents he held for various pieces of support gear scrolled underneath it.

"I feel that makes me more than qualified," Izuku finished.

"What's your quirk?!" the blue-haired girl suddenly called, bouncing in her seat as she grinned at him.

"I don't have one, Hado-san. And please raise your hand before asking a question next time," Izuku replied, the class starting slightly as he turned back to the board, "Now, onto the lesson."

Izuku sighed as he stood outside the door to 1-A. Of the five classes he had taught today so far, he'd had to give detentions to students in four of them. The only class so far that had been spared was 1-B, the students all greeting and treating him like he was any other teacher. And now he had this lot. He'd heard that Aizawa had already expelled one of his students for not doing well enough on some kind of quirk comprehension test. One that had taken place during the Entrance Ceremony. The Entrance Ceremony where he was introduced.

"What even is Quirk Theory?" he heard a male voice say through the door as he reached to open it, making him pause, "How's it supposed to help us be better Heroes?"

"Dunno, it sounds kind of complicated," another voice said, female this time, "Maybe it's about how we can improve our own quirks?"

"I DON'T NEED NO FUCKING TEACHER TELLING ME HOW TO IMPROVE MY QUIRK!" A strangely familiar voice shouted over the rest, making Izuku flinch slightly, "I'LL FUCKING ACE THIS BULLSHIT CLASS NO EFFORT!"

"I don't know, kero," another female voice said, croaking at the end of her sentence, "I think it sounds interesting."

This would be interesting.

"Excuse me, but are you lost?" the tall, blue-haired boy asked almost instantly as Izuku opened the door and walked in, "I do not think this is your classroom. And where is your uniform?"

"This is class 1-A of the Hero course, correct?" Izuku replied with a smile as the boy nodded, "Then I am precisely where I am meant to be."

"I find that hard to believe," the student replied, getting up from his desk and marching stiffly towards Izuku as the rest of the class muttered to each other, "Show me your student card, please!"

"I don't have one, Iida-san," Izuku replied, watching as the boy paused at the mention of his name, before Izuku pulled the small piece of plastic from his pocket and presented it to him, "I do, however, have a Teacher's Identification Card. I understand that your Homeroom teacher was unprofessional enough to skip the Entrance Ceremony, but that is no excuse for ignorance. Especially from a prospective Hero. Now, please sit down or you will have detention this afternoon."

"I…you…what?" the boy sputtered as the class fell silent, staring at Izuku in shock, "Who are you?"

"My name is Izuku Midoriya," Izuku said plainly as he turned to the class, "And I am your new Quirk Theory Teacher."

"Izuku Midoriya?" the blond sitting in front of the empty desk growled, "Wait…DEKU?!"

"He should be expelled."

"He has potential," Aizawa growled as he glanced down at the other teacher.

"He physically attacked a member of staff using his quirk," Izuku replied, glaring back at the older man, "If it wasn't for my training, I may have been seriously injured."

"It was a lapse in his judgement," Aizawa replied, "I'll talk to him about it."

"Will you now?" Izuku sighed, "Just so you know, I also took the liberty of reviewing all of your students' costume designs, Aizawa-san. Who thought it was a good idea to give an obviously mentally unstable teen a weapon with that much explosive potential? Are you trying to get him to kill your other students?"

"Of course not!" the man replied, now glaring back at Izuku, "He'll just have to learn to use them responsibly."

"No, he won't," Izuku growled back, "I've given him afternoon detention for the rest of the month, which he will take during every Practical Heroics lesson by having a counselling session with Hound Dog. Also, his costume will be revised by a trusted source of my choosing."

"You can't do that," Aizawa hissed, staring at the teen in shock.

"I already have," Izuku growled back, "If you don't want him expelled, you had better start actually teaching, rather than simply running away from the, as you put it, "problem children"."

"Running?" Aizawa stepped back, "When the hell have I ever run away?!"

"I've seen your records, you expel students at the drop of a hat, even if you reinstate them later," Izuku replied, "I may have only had my teaching degree for a few months, but I can recognize borderline child abuse when I see it."

"Child abuse?" Aizawa was reeling as the teen stepped towards him.

"Yes, child abuse! Do you have any idea what you're doing to the psyches of the kids you expel?" Izuku was almost shouting now, "You're not fixing anything by expelling them, you're breaking them and expecting them to piece themselves back together into something you approve of! And that is child abuse!"

"That is quite enough, Midoriya-sensei," Nedzu hummed through his cup of tea, the teen blinking as he stepped back, taking a deep breath to calm himself.

"I apologize for my outburst, Principal," Izuku said calmly, his brow still furrowed in anger.

"I need you both to remember that here at UA, we give out teachers a great deal of freedom in how they teach," Nedzu said as he set his tea cup down, "So while I understand your objections to the other's teaching methods, I would ask that you not question them unless they actively cause harm to the students."

Aizawa and Izuku nodded as they looked at the Principal.

"That being said, Midoriya-sensei has brought up a valid point," Nedzu continued, "As such, we will be reviewing your methods, Aizawa-san."

"You're taking his side?" the man gasped, eyes going wide.

"Of course not," Nedzu chuckled, "He just brought up valid points."

"Good afternoon."

"Afternoon, uhm…sensei?" the boy said as he stepped into the break room, looking around slightly as Izuku gestured for him to sit on the stool opposite him, "If you don't mind me asking, what is this all about?"

"Well, Shinso-san," Izuku said, "I understand that you tried out for the Heroics Entrance exam, correct?"

"Yeah," the purple-haired teen muttered as he sat opposite the other boy, "I failed though."

"Yes, your quirk doesn't work on robots," Izuku hummed, nodding his head.

"No, it doesn't," Shinso muttered, "Didn't help that some blond asshole was stealing everyone's points, either."

"And that is the problem," Izuku sighed, before looking the teen straight in the eyes, "Your quirk should have been more than enough to have you be a recommended student. However, due to the short-sightedness of the faculty, others, with more "flashy" quirks, were able to get in instead of you."

"What are you saying?" the teen asked slowly.

"I've petitioned to have you moved into Class 1-A of the Heroics department. And Principal Nedzu agreed," Shinso's jaw dropped as he stared at the other teen, his eyes wide as Izuku gave him a determined look, "However, there is a condition."

"And what is that?" Shinso asked.

"You have to win the Sports Festival."

"Why did you lie to him?" Nedzu asked as he moved the chess piece slowly across the board, sipping at his tea.

"I believe Aizawa-san refers to it as a "Logical ruse"," Izuku replied as he made his own move.

"Ah, I see," Nedzu replied, "But why winning the Sports Festival? Couldn't you have told him to simply place? Or even just reach the third round?"

"I could have," Izuku hummed, "But I think the world needs to see that they can be wrong about quirks."

"Hmm," Nedzu nodded, "Is that why you're building that suit in the Support Department?"

"Yes," Izuku replied, unsurprised that the Principal knew about that, "And fair warning, I'm probably going to steal Hatsume for I-Island as soon as she graduates. I've never seen someone as skilled in prototyping and design as her."

"Fair enough," Nedzu laughed, "Also, are you sure that the USJ will be attacked this afternoon?"

"After the gate incident, and the Press," Izuku paused, looking up at Nedzu, "And the fact that my schedule for class A was missing? Yes. Definitely."

"Heroics is more than just fighting Villains," Thirteen said, Cementos beside them, as the students stood outside the large square building, "Today we'll be using Gym Gamma, also known as the Training Kitchen Lab, or TKL for short, to simulate various rescue situations! Please thank both Cementos and Midoriya-sensei for being here to help!"

"Thank you, Senseis!" the class called as they filed in, several glancing at Izuku as he looked into the distance.

"They'll be fine," Cementos said softly as he patted the teen on the shoulder, "They have All Might with them."

"Yeah…" Izuku said quietly, "Yagi's there. They'll be fine. He'll be fine."

"It's good that the USJ incident was handled so well," Nedzu said as the three other individuals sat around the table, the chimera nodding towards Izuku, "We were able to capture a large number of the Villains, including one Tomura Shigaraki, who we believe to be the ring leader."

"I doubt it," Izuku sighed, looking up at Toshinori, "I think we have bigger problems than that."

"You aren't suggesting that…" the skinny man began.

"All For One is behind the attack?" Izuku cut him off, "That's exactly what I'm saying."

"I'm sorry," Tsukauchi cut in, "I'm still reeling a bit after finding out that All Might's special Analyst is a…well a kid. And that he knows about All For One. No offense, Midoriya-san."

"None taken," Izuku replied, smiling at the Detective, who nodded happily, "I'm knowledgeable of a great many secrets, one of them being All Might's current state, and the battle that put him in it. After all, David and I were the ones who helped keep All Might's power at the maximum level it could be these past five years."

"And my offer to you still stands, Midoriya-san," Toshinori said, "I would gladly give One For All to you. You would be the perfect vessel to continue the legacy."

"And I am eternally grateful for that, Yagi-san," Izuku said as he smiled, "But I've made my decision. If I'm going to be the first quirkless Hero, I'll have to do it quirkless."

"Fair enough," Yagi nodded, "But onto more pressing matters. You said that All For One is moving again?"

"Yes," Izuku nodded, sliding a manilla folder across the table and opening it, "I looked over the data we were able to gather from the creature called Nomu, and I found something disturbing."

"Izu!"

Izuku grinned as the blond threw herself into his arms, hugging him tightly as he spun the two of them around.

"Hey Mel, I missed you!" He sighed, tears forming in the corners of his eyes as he looked at her lovingly.

"Dork, it's only been a little over a month!" the young woman laughed as he set her down, "And we talk every night!"

"Still, I missed you," Izuku sighed, grabbing her luggage, and hefting it onto a trolley, "Damn, what do you have in here? A Hadron Collider?"

"Not quite, just some experimental tech for your suit!" Melissa laughed, "So, how's life at UA been treating you?"

"Before or after I earned a reputation as the teacher who gives out the most detentions?" Izuku sighed, "Those damn kids just can't stop making jokes about my age."

"Kids?" Melissa snorted, slipping her hand into his, intertwining their fingers, "Aren't most of them older than you?"

"Oh, shut up!" Izuku laughed as they walked through the terminal towards the waiting car, "They may be, but they certainly don't act it most of the time."

"I doubt it when compared to you," Melissa chuckled, "But then again, you're a bit of an odd ball!"

"Hey! I'm perfectly normal for a fifteen-year-old boy!" Izuku huffed, "Anyway, did you have any plans for tonight?"

"Me? Plans?" Melissa chuckled as she bumped her shoulder against Izuku's, "Now why would I have any plans other than spending time with my Fiancé?"

"Good, because I need some help with my suit," Izuku said excitedly, "I can't get the kinetic batteries to store enough charge, and Hatsume keeps making them explode somehow."

"Oh," Melissa said, a look of surprise on her face that quickly morphed to excitement, "You know exactly what I like!"