Izuku was engulfed in a dizzying swirl of darkness, losing all sense of direction. He then found himself falling above a large body of water, he quickly held his breath and braced for impact. As he was falling he came to the conclusion that he was above the Flood Zone and that the mist villain must have a teleportation quirk.
Izuku hit the water and was immediately face to face with a villain with shark-like features, the villain then began swimming towards Izuku opening their mouth wide showing two rows of sharp teeth. Izuku prepared to fight the villain assuming that the villain would be able to swim faster than him, suddenly a pair of strong legs planted themselves onto the villains face. Tsuyu Asui then wrapped her tongue around Izuku's waist and pushed off of the villains face effectively kicking him and propelling herself through the water.
When she reached the yacht in the middle of the zone she threw both Izuku and Mineta onto the deck of the boat using her tongue and then climbed the side of the boat.
"Thanks for the save Asui," said Izuku as he got to his feet catching his breath from being underwater.
"Call me Tsuyu," she said in a monotone voice. "Also we seem to be in trouble, here."
"Yeah, they seemed to know which teachers would be here, the simplest explanation that they caused the media break in yesterday to get the lesson schedule. That means they've planned this, so they must have figured out a way to beat All Might," said Izuku as he started analysing his surroundings.
After looking around for about a minute Izuku turns back to Tsuyu and Mineta saying, "I think we need to fight our way out of here."
Mineta then started screaming, "that makes no sense. Midoriya you're contradicting yourself. If they can beat All Might how are we supposed to win?!"
"We have the element of surprise. All the villains in the water are clearly suited towards aquatic combat, right? So they must have had the layout of the U.S.J when planning their attack but they sent you, Asui to the shipwreck zone when it would have been better to send you to the conflagration zone. Therefore they don't know what quirks we have. We can use that, tell me what your quirks can do, I think I can come up with a plan."
Tsuyu, while crouching replied, "I can jump really high and stick to walls. I can stretch my tongue out to a maximum of 20 meters. I can also spit up my stomach to clean it and secrete a 'poisonous' fluid through it just stings a bit. Those last two probably won't be helpful right now though."
"Wow, I underestimated you, you're strong. You both know I'm quirkless, so Mineta what can you do?"
"The balls on my head are really sticky and can stick to anything for up to a day depending on how I'm feeling, they regenerate immediately but if I use too many my scalp starts bleeding. I also bounce off of them." He then demonstrated this by pulling one of and sticking it to a wall.
Izuku began muttering trying to come up with a plan meanwhile the villains in the water were becoming impatient, a large axe shape formed out of the water and came down on the yacht cutting it in half and causing it to slowly sink into the water. Mineta started to panic and began throwing his balls into the water until Izuku exclaimed, "I've got it! I have a plan, come here. Tsuyu, do you think you could throw me over towards the shallow end of the zone?"
"Yeah, I think I could get you close. Why do you need me to throw you though?"
"Well if I can get over to the zone controls I'm sure that there would be a whirlpool setting to train hero students. Once the whirlpool starts Mineta can use his quirk to stick all the villains together when they get pulled together by the current and then you can jump over to the shallow area with him and we can make it over to the exit."
"Okay, that makes sense. We need to do this now though." Tsuyu said before picking up Izuku with her tongue. "Ready?"
"Yeah. Let's do this." Tsuyu whipped her tongue back and then flung it forward before releasing Izuku and sending him flying over the zone towards the central plaza.
The villains watched Izuku saw overhead and began swimming over to him as he fell into the water, noticing the villains coming closer Izuku swam as fast as he could over to the edge of the water. After quickly looking around he spotted a control panel obscured by some bushes near the water's edge and ran over to it quickly finding the input for a whirlpool and starting the program.
The water then began spiralling and pulling the villains towards the centre, noticing this Mineta began throwing his balls into the water which caused all the villains to be stuck together into a large group. Seeing this Izuku shut of the Whirlpool program allowing Tsuyu and Mineta to jump over without the risk of being caught in the whirlpool.
The trio made their way close to the central plaza and Tsuyu said, "What should we do now?"
Izuku replied, "Iida has already gone to get more teachers to help so we need to get to the exit and meet up with everyone else." Once they got closer they saw Eraserhead still fighting with a crowd of villains using his quirk and capture scarf to immobilise the villains before knocking them out.
A pale man covered in disembodied hands then made his way towards Aizawa while counting down the time while his quirk was active, they began charging towards each other. Eraserhead dodged under the villain's outstretched hands and landed an elbow into his stomach. The villain then grabbed hold of his elbow and using his quirk made the cloth and skin begin to disintegrate cracking the skin and exposing the muscle below. Aizawa spun his body and landed a left cross onto the villains face separating the two and stopping the quirks effect.
"Your quirk isn't good in long, group battles, huh? You're much better at sneak attacks yet you jumped straight into this fight. Hoping to make the kids feel safe?" The villain was picking himself up off the floor. "That's so cool. By the way, hero... I'm not the boss here."
A hulking black figure then surged towards Aizawa, closing the distance and pinning him to the floor in the blink of an eye. The figure then snapped his arm like a twig even while having its quirk nullified by Eraserhead. The trio in the water watched on in horror as this behemoth pinned their teacher on the floor with ease.
While they were frozen in fear, the black mist villain reappeared next to the pale man saying, "Thirteen is incapacitated, there were some students I couldn't warp away. Also, there's a student missing but I was told they weren't in today."
"Good, let's see if killing a few kids will get All Might here any quicker." The pale man said before dashing over to the teens in the water, "wound the pride of the symbol of peace."
Izuku saw the villains hand come forward as he lunged at Tsuyu, only having enough time to react by jumping between the two. The villain's hand landed on Izuku's upper arm and shoulder slowly disintegrating the cloth of his PE shirt before landing on his skin. He let out a guttural scream as his skin began turning to dust leaving a hand-print shaped area of exposed muscle. The villain then turned around to see Aizawa lifting his head off the ground to cancel out his quirk. "You really are so cool, Eraserhead."
The larger villain then slammed Eraserhead's face back into the ground, hard enough to crack some of the concrete. See the pale man turn his back to them Izuku quickly told his classmates, "Try and get Aizawa sensei to safety, I'm going to distract the villains." Before giving them a chance to reply Izuku tackled the villain around the waist, this sent the villain to the ground face first and Izuku used the surprise attack to pin the villain's hands against the floor. Tsuyu and Mineta started running around the edge of the plaza, heading towards the stairs while waiting for an opening to rescue Aizawa.
On the other side of the Plaza, three more hero students arrived Todoroki after freezing the whole landslide zone and trapping the villains located there and Kirishima and Bakugo who fought there way out of the ruins zone. They stopped to asses the situation and noticed Aizawa being pinned down by a behemoth of a villain while Izuku was pinning the villain covered in hands. They also spotted the black mist villain and Tsuyu and Mineta all waiting for their opportunity to act. Before they could react to the situation in front of them the pale villain shouted, "Nomu, get this brat off of me!"
In the blink of an eye, the large black villain who was previously holding Aizawa on the floor had disappeared and reappeared right in front of Izuku. Tsuyu saw her chance and extended her tongue and wrapped it around Eraserhead bringing him towards the exit, meanwhile Izuku lifted his head just in time to see a massive black foot coming towards him. The Nomu's foot collided with Izuku's torso making a loud cracking sound, he was then sent flying backwards and rolling across the floor like a rag-doll.
Silence flooded the plaza. All of the hero students were frozen in place when the doors to the entrance burst open, "Fear Not. I AM HERE!" All Might had just arrived not smiling like usual, instead, with a serious look on his face, "Young Iida told me what happened so do not fear, your other teachers are also on their way. Now villains surrender."
"You're too late ALL MIGHT!" interrupted the pale villain, "Your getting slower, weaker even." With that statement, the villain pointed over to a green haired boy collapsed on the ground unmoving. Many of the students then broke from the frozen state, Uraraka had tears streaming down her cheeks watching Izuku's body, chest barely rising with his ragged breaths. The last thing Izuku saw before succumbing to unconsciousness was All Might colliding with the Nomu causing a large shock wave.
Later that day Izuku awoke to a blinding light and a repetitive beeping, looking around he recognised the room as Recovery Girls Infirmary. As he tried to sit up he let out an involuntary groan from the pain in his chest. Recovery Girl then walked in the room saying, "lie back down, I've healed most of your injuries but you've still got some pretty bad bruising."
"What about the others, is anyone else hurt? How's Aizawa sensei?" Izuku questioned.
"Calm down, your classmates are fine, just a couple of scratches. Aizawa and Thirteen are both being treated at a local hospital but they will be fine as well," Recovery girl replied, "as for you, you will be staying here overnight and I'll heal you again in the morning. You will, unfortunately, have a scar from the injury on your shoulder as I couldn't reverse the disintegration of your skin. Now get some rest."