"Hey, hang on, Bakugo!" Kirishima yelled as Bakugo propelled himself through the hallway to the lunch area with small but powerful explosions. Izuku raced after him, trying to get Bakugo to walk like a normal person.

"Kacchan, you might hurt someone!" Izuku said, desperately trying to convince the headstrong teen to listen to reason and behave.

"Screw them, Deku! If they can't get out of the way, that's their fault for being too slow!"

Having said that, Bakugo slammed into someone coming out of a room and they both fell over. The other person got up, dusting himself off.

"Do you mind?" he said placidly. Bakugo glared at him.

"You should have got out of the way, damn snail!" Bakugo yelled. The other boy, who seemed to be just about the same age as them, cocked his head at Bakugo.

"You should have walked like a human being, you damn rocket ship," he said, mimicking Bakugo's phrasing. Bakugo seethed, and advanced on him, little explosions crackling in the palms of his hands like tiny fireworks. The other boy raised an eyebrow, smiling.

"Sparklers. How cute."

Bakugo howled with rage and almost leaped to attack, had Izuku not restrained him, holding his arms. The other boy didn't even blink.

"Let go of me, Deku!" Bakugo yelled, fiercely struggling to escape Izuku's grasp. After a few seconds, he stopped trying to free himself, although his muscles were noticeably straining.

Now that Deku was keeping him back, Katsuki was held in place just long enough to focus, and notice some unusual details.

He had short midnight black hair and eyes that were such a deep, dark purple that they were like staring into a nebula. But the one thing that made him stand out was his uniform. Instead of slate grey, it was ebony black, and the normally green markings were royal blue. His pants were the same shade of darkness, and his tie was also blue. There was an air of quiet arrogance and force to him. It was in the way he stood, the way he held himself, lazy, and yet completely ready for anything. Like a cat.

"Why the hell is your uniform different?" Bakugo growled at him.

Izuku looked at him, and realized that the uniform was a different colour. He stared at the unusual boy, who said nothing, just smiling.

"Answer the question," Bakugo snapped. He had stopped resisting, so Izuku let him go. He just stood there, glaring at the other guy.

Black Uniform laughed. "Class 1-S," he said smiling, and then his face snapped to horror. It didn't, however, seem too genuine. There was just a hint of glee in the way his eyes glinted as his face made the expression. "Forget I ever said that."

"What? Class 1-S?" Izuku asked.

Black Uniform nodded. "Yup."

"I don't care anyway. Keep your shitty Class 1-S to yourself, asshole." Bakugo stomped off. Izuku was left behind. Kirishima was still quite a long way back, what with the speed Izuku and Bakugo had been travelling at.

Black Uniform smiled nicely at him. "Please don't mention it to anyone," he said. He walked away.

Huh.

=0=

Once they were back in class, it was Mr. Aizawa's period.

'Well,' Izuku thought, 'It's now or never.'

He raised his hand. Aizawa looked at him. "Yes?" he drawled.

"Aizawa-sensei, what is Class 1-S?"

There was a very still silence, and Aizawa looked at him, shock showing clearly on his face.

"How do you know about that?" he asked.

"Um, I heard someone say something about Class 1-S," Izuku explained.

"Who was it?" Aizawa asked quickly.

Izuku described the person he had met in lunch break. Aizawa sighed. "That kid," he muttered, glaring quietly at nothing.

"Since you asked in front of everyone, I suppose I will have to tell all of you. But I want you to promise me that you won't tell anyone else about this." Seeing the confusion in his student's eyes, Aizawa added, "I'm very serious. This is an extremely sensitive matter."

Iida stood up. "I, Tenya Iida, declare that I will not tell anyone about the matter you are about to disclose to us under any circumstances!" he said forcefully, his overflowing, loud personality showing itself yet again. Others quickly followed suit, though not with as much enthusiasm as Iida. Only Bakugo was left. Aizawa looked at him, waiting. Bakugo just looked away, and grunted. Accepting it, Aizawa turned to face everyone.

"To put it simply, Class 1-S is a collection of the most elite of the elite." Aizawa began. "While UA does have prominent heroes like all of you, Class 1-S stands out, even among you. Where you had to train your Quirks after coming to UA, Class 1-S already had powerful or skilled Quirks. They are the best of the best, chosen by the government to take the hardest training imaginable to become heroes. That is, only if they wish to," he added. "The student Midoriya met is Fukusei Haruma. He is by far the most powerful student in the history of UA." At this, Izuku, sitting right behind Bakugo, heard a sharp intake of breath.

'Oh no,' Izuku thought to himself.

"I bet I could beat him," Bakugo growled. Aizawa shook his head.

"No. None of you could beat him alone."

"Why?" Bakugo demanded. "What's so special about him?"

Aizawa sighed with exasperation. "His Quirk lets him copy other Quirks. Permanently. As far as we know, there is no limit to how many Quirks he can store up, although there is a matter of storage space."

The class was still with silent shock. They could hear the wind blowing outside, and the chatter of students in the halls.

Izuku was the first to speak. "What do you mean by storage space?"

"He can copy certain parts of Quirks, not the entire thing at once. He fits the data into slots. He has infinite slots, but each slot is limited in terms of storage." Even after this explanation, Izuku looked confused.

"Think of it this way. He is a computer. Quirks are stored in USB sticks. He can handle infinite USB sticks, but if the stick has too much data stored in it, it stays locked to him, even when slotted in." Aizawa said. "So he divides the data up into separate USB sticks, and slots them all in separately. He then groups the data to form the complete Quirk. Understand?"

Izuku started nodding furiously.

"Good," Aizawa said. At this point there was a knock at the door.

"Come in," Aizawa called. The door opened, and Black Uniform, or rather, Haruma Fukusei, popped his head through, taking care not to show his uniform.

"Aizawa-sensei, Principal Nezu is calling you and Mic-sensei. He says that there's a detective who wants you for something." He looked around at the class.

"Hey!" he said. Then he noticed Izuku and Bakugo, and the way everyone was staring at him. "Oh, it's the two of you. Why is everyone on edge?" he asked.

"I, uh, I asked Aizawa-sensei about Class 1-S in front of everyone," Izuku confessed. Fukusei stared at him for a moment. Then he shrugged, and walked in.

"Things happen, I suppose. What's done is done. The important thing is to move on." He faced everyone else. "Please, keep this a secret." There was unanimous nodding from everyone.

"Fukusei." At the sound of Aizawa's voice, he turned around. Aizawa handed him a sheet of paper. "Can you handle this for me?"

After a little bit of blank staring at the paper, and reading what was on it, he looked up at Aizawa.

"Why me? Why not just ask one of the teachers?" he asked.

"They're too far away."

"But I could get them, couldn't I?"

"I have my reasons." That tone brooked no argument.

Fukusei looked at him suspiciously for a little bit. Then understanding dawned on his face and he nodded. "Okay," he said. Aizawa just grunted, and went out.

Fukusei turned to face them, and smiled. "Well then, it looks like I'm your teacher for now."