Chapter 20: One For All

"Your stance is not good enough. Straighten your back more. The enemy can easily rush past you if you stand that crooked," Yoroi shouted at Watanabe who replied, "Yes sensei!" Yoroi was a strict teacher, but he did train them properly and made sure they were ready, "Izuku, good job. You have improved drastically. You are still not close to Watanabe's weight lifting capabilities but your quirk should be enough. Have you mastered it yet?"

"I am close to it sensei!"

"Good. Denki, no, no. Here, give me that staff. You only have a week left till the entrance exams, you shouldn't be making these mistakes. Especially you Watanabe. These two can go for brute force if nothing else, you need technique and muscle power to hold a chance,"

Watanabe nodded. Denki moved to Yoroi to fix his staff handling, "Look carefully. If you can master this, you can use an iron rod to improve your combat skills by transmitting electricity through it," Yoroi pointed out as he showed him the proper way to use the staff. "Watanabe that's enough. Spar with me now. You can use your quirk, come on now!"

"You guys took a long time," Yagi commented.

"Sorry sensei. Yoroi-sensei wanted some more time to correct Watanabe's stances. The spar also took up quite some time and he had to wash off the blood after," Izuku excused.

"Blood?" Torino asked.

"To be fair, I think he was just pissed I missed my kick and broke the floor tiles," Watanabe replied. Yagi sweatdropped, "Sure, that's all you did. Inko-san, glad to see you are here too,"

Inko nervously nodded, "Yes, you are sure his body is ready?"

"100%. Torino-sensei checked too," Yagi said brightly, "Speaking of, did Denki think it was weird, that I wasn't going to train him today?"

"No, we just told him that you gave us the weekend off to rest for the entrance exam and then sneaked here," Watanabe replied uncomfortably. He didn't feel great about lying to his friend but it was up to Izuku to tell Kaminari. Izuku had also been worried that Kaminari would be disappointed in him for not telling him about One for All but he couldn't betray All Might's trust either.

Yagi nodded, "Now, are you ready, young Izuku?"

Izuku nodded with determination, "Good, now eat this," Yagi said holding out his hair in All Might form. Izuku stared indecorously. Watanabe's face puffed up as he tried to contain his laughter and Inko just stood with her mouth open.

"Well, actually it doesn't matter, as long as my DNA is transferred to you. The hair is the best one. I doubt you would like my blood,"

Izuku didn't say anything. Watanabe stared like Yagi was joking. "Now, come here!" Yagi held Izuku tightly.

"AHHHH," Izuku screamed. Yagi forced the hair into Izuku's mouth and made him swallow before letting him go. Izuku moved like a doll for a while before puking into the ground. Watanabe chuckled slightly. "Why don't you try eating hair?" Izuku pointed out.

"I'm not an idiot like you," Watanabe said with a grin, "I would have just gotten a blood transfusion instead,"

Izuku gaped like a fish while Yagi fisted his hand, "Oh yeah, that should have worked too,"

"Well, we might have different blood types," Izuku said.

"A drop of blood wouldn't be enough to agglutinate, but probably enough for quirk transfer,"

"Yes but the-"

"You can theorize later on. Let's see the quirk," Torino interrupted.

"Ah, Torino-sensei, Recovery Girl said that it would take up to three hours before the quo activates since the stomach needs to digest it," All Might replied.

"So, we just wait till then?" Izuku asked.

"Yes," All Might said and stood in silence with Torino, Izuku, Watanabe, and Inko.

"Soo, theorize?" Izuku asked.

"Theorize," Watanabe replied.

Three hours later

"But see red blood cells don't have DNA,"

"You have white blood cells which do!" Watanabe argued.

"Well, that's three hours so now please, shut up! You have been talking about quirk transfer theory for way too long." Yagi snapped. Inko seemed to have fallen asleep a while back.

"Oh right. I guess we have been talking about that for a while," Watanabe rubbed the back of his head.

"A while is an understatement," Torino drawled lazily, "Now, get on with it and use the quirk,"

"Right," Izuku said and stood flexing his muscles. Everyone waited in anticipation, "How do I use it again?" Izuku asked slowly. Everyone fell face flat to the ground, "Just try to power up," All Might said. "What do you think I'm doing?" Izuku complained.

Torino sighed, "This isn't going to work," he sped up and kicked Izuku hard and then threw him in the air with his momentum. Watanabe's eyes widened, "What the-" he stated with panic.

"Just watch!" Torino ordered. Inko woke up to Izuku screaming, "IZUKU!" she screamed in terror. "AHHHHH!" Izuku screamed, "What do I do? What do I do?" Izuku panicked. Yagi got into his All Might form ready to catch Izuku. A few moments before Izuku came down hard, he instinctively punched at the ground releasing a huge gust of wind, propelling Izuku even higher. "Alright, that's enough," Yagi said and jumped into the air scooping Izuku down, "His hand's broken," he said.

"We have to take him to the hospital," Watanabe said, worrying over his brother.

"Not to worry, I asked Recovery Girl and she agreed to help us," Yagi apologized, "We'll go right away,"

"Alright we are here," Yagi said as he stopped in front of UA's entrance. Yagi swiped in his card and the doors opened allowing him to drive through. Izuku watched in amazement as they drove through UA and stopped in front of the nurse's office. "Izuku," Inko said snapping him out of his amazement.

"Oh, sorry, I was just..."

"It's ok, come. Get out slowly, watch your hand,"

Yagi lead them into Recovery girl's office, "Recovery Girl, how have you been doing?"

"Toshinori. How have your injuries been?" Chiyo asked.

"Well, nothing in the past year,"

"That's only because you found a successor and decided to look after yourself to train him. Where is he anyway, I'm guessing he broke something since Torino is here too,"

"It wasn't my fault," Torino replied.

"You threw him to the air," Watanabe sweatdropped.

"But it was his quirk that broke his arms," Torino pointed out.

"Enough. The one clutching his hand is Izuku, I am guessing," Chiyo said, "Come here," she ordered. Izuku gulped and sat on the bed next to her. Chiyo used her quirk on him and said, "Now, go to sleep. I fixed your arm but you will need sleep to regain the energy needed to heal it,"

"B-but,"

"No buts! Sleep! Toshinori got a successor just like him. I expect you'll break more bones when you get to UA too," Chiyo grumbled.

"I'd listen if I were you," Torino said while Yagi nodded sagely beside him. Izuku gulped and nodded. Someone who scared even Torino was no one to mess with. In a few moments, Izuku fell asleep.

"You are his mother?" Chiyo asked.

"Ah, yes,"

"Please get some sense into the kid before Toshinori corrupts him," Chiyo said. Yagi spluttered while Inko laughed. "You have been too quiet, Something on your mind?" Torino asked Watanabe who nodded, "Yagi-sensei, is there an open field here anywhere?"

"Hm, there are. Why?"

"Can I test something on your quirk? We need it to be outside in case it doesn't work,"

"Uh, sure. Izuku probably needs some time to wake up too," Yagi said and ushered Watanabe to follow him. "Hold on, I'm coming too. I don't trust you Toshinori. And the things you have told me about this one doesn't make me want to trust him either," Chiyo said and got up, "Inko-san, please yell if Izuku wakes up. I still have to some checkups," Inko nodded. Chiyo, Torino, and Watanabe followed Yagi to an open field.

"Wait, how many people have you gossiped to about us?" Watanabe asked Yagi who laughed, "Just Recovery Girl and Nedzu."

"Right. What did he tell you about me?" Watanabe asked Chiyo with worry. Chiyo smirked, "I think I'd better keep that as leverage. In case you get out of hand, that is if you get to UA," Watanabe grumbled at that. "Right, we're here," Yagi stopped in the middle of a field, "What did you want to do?"

Watanabe activated his quirk and switched through X-ray and infrared vision, "Right, keep still. This might hurt... or maybe not, let's see. Get into your All Might form." he said vaguely. Yagi sweatdropped. Watanabe took a step back and launched himself at All Might's right arm and jabbed strongly at it. All Might doubled over in pain and groaned, "Er, sorry about that. But can you use your arm right now?" All Might got up and tried to move his right arm but couldn't. His eyes furrowed, "No, I can't even feel it,"

"in other words, since you can't move your hands, you can't use your quirk either," Watanabe pointed out.

Yagi nodded, "What did you do?" he asked intrigued.

Watanabe hit Yagi once more in the arm but this time, more gently, "Pressure points. I cut off the blood supply to your arm. If your blood supply is cut off, your arm will be incapable of moving, so you can't use your quirk. Your arm falls asleep and your quirk is pretty much useless,"

Yagi stiffened, the power that had defeated All for One... to think it had such an obvious weakness, "How did you learn to do it?" Torino asked as Yagi stretched his arms to relieve some of the pain. Even Recovery Girl was impressed, it wasn't every day you saw someone using biological facts to shut off the number 1 hero's quirk.

"At the dojo. Yoroi-sensei taught me all the pressure points since my X-ray allows me to see the points more easily. As long as I can put enough force on to the point, I'll be able to do this. It's a second-grade erasure quirk really," Watanabe laughed.

Torino was smirking, this kid was full of surprises. Yagi took out his phone, hearing the message notification go off, "Excuse me, I'll be right back,"

"I'm guessing you had CCTV cameras set up there?" Yagi asked, entering Nedzu's office.

"Obviously. I must say, that was some quick thinking from Watanabe," Nedzu commented.

Yagi sighed, "Yes. I was surprised to hear how he did it but also proud of him. However, in battle, the enemy won't just stay in one place for him,"

"I am sure he has taken that into account. Or at least Izuku pointed it out. That's why he has so many weights and is learning martial arts," Nedzu replied. He sipped his tea and smirked to Yagi, "It's fascinating that so many strong quirks can be shut off by just striking a pressure point. However, his quirk does aid him in that,"

Yagi nodded.

"Now, the main reason I called you is to remind you that you cannot mention anything about the entrance exams to either of the three,"

"Of course, that goes without saying," Yagi replied.

Nedzu nodded, "Good, also since they are not UA students, I am afraid I cannot allow them to train with their quirks here, at this moment. They don't have a pass either. And neither you or UA should be accused of favoritism. Therefore, I am afraid Izuku will have to explore One for All outside of school grounds. More tea?" Nedzu finished.

Yagi twitched.

Yagi had offered to drive them back to their home. Torino had hitched a ride too, "You'll have to get your quirk under control before the entrance exam," Torino commented.

"I am trying to think of a way to minimize the damage. I'd say that it would have been easy to control if I used the quirk in one area. But while I was in the air, I only used the quirk in my hand. I don't think I can bring the level down any further than I could while we were at UA,"

"Don't worry, we still have a week to figure it out," Yagi comforted.

"Izuku," Watanabe said with a smile.

"Hmm?"

"You're an idiot,"

"H-huh? Why?"

"Let's explain it this way. Your quirk is hot soup. If you put it in a glass, it will take longer to cool down, but if you put it in a wide bowl, it will cool down faster. So, theoretically, if you use your quirk across your whole body, it will be easier to control,"

"Oh," Izuku said simply, "Yeah that should work. Right Yagi-sensei?"

Yagi nodded, "It's worth a try,"

Izuku turned to his cousin with a teasing smirk, "You better up your game. Kaminari and I are going to leave you in the dust at this rate,"

Watanabe returned a smirk of his own, "I would rethink that. While you were sleeping, I figured out how to shut off One for All,"

"Hmph, as if," Izuku replied but a glance from Torino made his face drop, "Really! How?"

Watanabe chuckled, only Izuku could remain enthusiastic while someone told him how his quirk could be defeated, "I shut off blood supply to All Might's arm. Without blood, the arm fell asleep, so that he couldn't move it. Since the quirk works by transferring energy, cutting off blood will stop the quirk as well. Without blood, no oxygen flow, without oxygen, mitochondria don't work any longer and no energy flow," Watanabe explained,"

"Whoa. I remember Yoroi-sensei talking about that but it's easier for you because you can just your X-ray vision to find the pressure points," Izuku said, a bit disappointed.

"Yeah, so in response to your earlier comment, I can shut off your quirk, and the number 1 hero's quirk. So, I don't think you or Kaminari are going to leave me in the dust. Wait, can I turn of Kaminari's quirk? So many possibilities," Watanabe grinned sadistically.

"But, I can still kick you to the moon can't I," Izuku declared.

Yagi nodded sagely and Torino twitched, "That didn't occur to you!?" He shouted at his student.

"Fine, I'll just shut off your heart," Watanabe replied.

"That's why I'm going to get chest plates," Izuku grinned.

"Doesn't matter, you'll break your bones by the time you do anything," Watanabe grinned.

"Well, I can still punch you into the ground before that,"

"I can dodge,"

"No, you can't!"

"Yes, I can!"

"Enough!" Inko shouted.

"Boy, mom coached you well," Watanabe replied. Izuku giggled. Inko smacked them both lightly, "Seems you were right," Izuku said to his causing earning both of them two more smacks.

A/N: If you have trouble understanding how Watanabe shut off One for All, leave a review with your questions and I'll happily answer. I specifically searched this on the internet and asked my bio teacher to know if this was plausible.

I have also started a One-shot series fanfic. So check that out as well!