"Look! You can see the island already!" Izuku yelled waking up All Might from his nap pointing out the window to a round island with a city inside of it under their jet. "It's like a dream to come here at the beginning of our vacation!"

"I didn't think you'd be so excited to come here. I'm glad I invited you. But Young Kiryuu..." All Might said turning around to seat behind them where a giant mound of blankets sat.

"Hayato, look outside!"

"I'm good!" Hayato's muffled voice yelled from the mound beneath him.

"You never mentioned he was afraid of flying."

"I'm not! It's turbulence that scares the shit out of me!" Hayato yelled popping his head out from the blankets. All Might then stood up as the captain's voice began to play from the P.A.

"This plane will soon begin its descent to I-Island."

"Alright then, this is going to get pretty exhausting. Once we arrive I..." He suddenly threw off his clothes revealing his red, white, and blue hero costume and quickly inflated into his muscle form. "...must maintain my muscle form constantly. Now, both of you should change too. You did get permission to bring your costume, right?" All Might asked as Izuku and Hayato stood up from their seats.

"Of course we did." Izuku said reaching into the bin above him to take out the suitcase for Hayato's costume and for his. But then as he closed the bin, the plane began to tremble making Hayato quickly jump back into his den.

"I'll change when we get there!"

"Here's a question for you two. Why was this man-made island created?" All Might asked as all three of them, now donning their hero costumes, walked onto a conveyor belt to pass through immigration.

"To create a place in which the world's talents could gather together to research Quirks and develop hero items. This island was made mobile in order to protect the scientists and their research from villains. That security system is as good as Tartarus, and no villain has committed a crime here before." Izuku responded making Hayato roll his eyes and take out a pencil from his bag and tapped on it.

"Knock on wood."

"You really know a lot about this stuff, huh?" All Might said giving a thumbs up to the boy as they finished their way through immigration. They then finished making their way out of the airport and to the entrance where Izuku's eyes lit up at the attractions and inventions in front of them. "You also forgot to mention how unlike Japan, people are allowed to use their Quirks as they wish on I-Island. Apparently, there are a lot of attractions in the pavilions that use Quirks. You should go see them later. But first...where is the hotel?" All Might said as he took out his phone to look for the location of the hotel the three would be staying at.

"Welcome to I-Island. Wait, All Might?!" The three looked forward to see a brown haired woman walking up to them, only to watch her eyes light up as she immediately recognized the number one hero.

"All Might?!"

"The number one hero?!"

"It's really him!"

"Oh god." Hayato said before grabbing Izuku's collar and quickly running away from the immense crowd of fans and reporters surrounding their mentor that kept growing by the second.

"Thank you for such a warm welcome! Line up for autographs!" All Might yelled as the two boys watched in complete shock.

"I didn't think I'd be stopped for that long...we were about to be late!" All Might said as the three of them had finally gotten away from his adoring public. He began to wipe off the lipstick marks from all the kisses he had received while Hayato began to down a sports drink.

"Late?" Izuku asked looking up at his mentor.

"Yeah, we're going to go surprise David now. Sorry, but would you two mind coming with me?" All Might asked making Izuku light up and Hayato nod.

"Of course I'll go!"

"Do I have a choice? You're the only one who knows where the hotel is."

"But, I haven't told him about One for All or how I've passed the Quirk to Young Midoriya, so both of you please keep that in mind." All Might said leaning down to whisper to the two.

"It's even a secret from your friend?" Izuku asked before looking at Hayato who looked ahead with a surprised and confused look.

"It's because danger follows around those who know the secret of One for All." All Might said raising a finger. "What is it, Young Kiryuu?"

"Um..." Hayato pointed forward to see a blond girl with glasses jumping on what appeared to be an oddly shaped pogo stick towards them.

"Uncle Might!" All Might smiled and extended his arms as the girl got closer. She jumped into his arms.

"Oh, Melissa!"

"Long time no see! I'm so happy you came!" Melissa said as All Might held her up happily as if she was a baby.

"Thank you for inviting me! But man, I almost didn't recognize you! You're all grown up now!"

"I'm seventeen now. I'm heavier than I used to be aren't I?" Melissa said before All Might raised her up higher.

"Not at all!"

"I'm glad you seem well, as usual, Uncle Might."

"Where's Dave, sweetie?"

"He's in his lab. It looks like he finished the first stage of some research he'd been working on for many years, so I invited you to this island as a surprise to celebrate that."

"Is that what it was? By the way, what was Dave researching this time?"

"He said it's confidential and won't tell anyone, even me."

"Scientists have it hard too, huh?" All Might said before remembering who was there with them. "Oh, boys, this is Dave's daughter."

"I'm Melissa Shield! Nice to meet you!" Melissa said turning to Izuku and extended her hand to him. Izuku smiled and took off his glove to shave hers.

"N-Nice to meet you! I'm Izuku Midoriya, a first year in the hero course at U.A. High School."

"U.A. High School? Then you're Uncle Might's..."

"Yes, I'm his student!"

"He's going to be a hero in the future!"

"Really?! What kind of Quirk do you have?" Melissa asked as All Might noticed one of his guests was missing.

"A p-power type!"

"It's cool, but it's a very orthodox design..." Melissa walked around Izuku making him blush. She lifted up his hood and then looked at his face mask. "...don't see any support items either."

'S-So close!'

"Huh?" She felt herself trip on something and the three of them looked down to see Hayato on the floor with what Melissa had come to them with on top of him. "Whoops!" She grabbed it and it quickly retracted into a small device in her hands. "Sorry about that!"

"Geez, you'd think you'd only see that in an anime or a western cartoon." Hayato said standing up and brushing dirt off his costume.

"Melissa, this is my other student."

"Hayato Kiryuu, I'm a first year at U.A. too." Hayato said extending his hand to Melissa who happily shook it.

"What kind of Quirk do you have?"

"I'm a speedster." Hayato said as Melissa began to examine his costume and feel the material.

"The material is so tough yet breathable. Interesting design, as if it was straight out of a comic book. No support items here either."

"We should be on our way to meet Dave." All Might said as he hid a cough from the three.

"Right! Follow me!" Melissa said beginning to run making others nod and follow.

"Hi Papa! Hi Sam!" Melissa said as she entered a room to see a tall brown haired man and a slightly shorter but more out of shape man with thinning ash-blond hair.

"Hey Melissa. What are you doing here? Didn't you say you had important research to do?" The brown haired man asked making Melissa smile.

"I do. Papa, I did research on what would be the perfect way to celebrate completing the first stage of your research! So I invited someone special."

"Someone special?"

"I am here...shaking with emotion from our reunion!" All Might yelled as he walked in behind Melissa while Hayato and Izuku stood behind him.

"Toshi?" David asked as his long time best friend

"All Might?" Sam asked as his eyes widened and he took a step back.

"I came all this way just to see you, Dave!" All Might laughed as he grabbed his longtime friend and spun him around before placing him on the ground.

"Well? Were you surprised?" Melissa asked poking her head from behind her "uncle."

"W-Well of course. Very surprised..."

"We both need to thank Melissa." All Might said as the two of them stood up. "Man, how long has it been?"

"Oh, don't remind me about how old I am. Neither one of us wants to think about that, do we?" David asked playfully punching All Might's arm before both of them broke into laughter.

"Yeah that's true! I'm glad to see you, Dave."

"I'm glad to see you too, All Might." David said as both friends fist bumped before All Might moved out of the way to introduce his students.

"Young Midoriya and Kiryuu, let me introduce you to one of my best friends, David Shield."

"I know who he is! Professor David Shield!" Izuku yelled happily making Hayato bury his face in his hands. "A top scientist in Quirk research who received a Nobel Quirk Prize! He was All Might's partner when he lived in America, and for All Might's hero costumes-" Izuku was cut off by Hayato quickly placing his hand over his mouth. He let out a deep sigh as Izuku kept screaming into his hand while Melissa giggled at the sight.

"Sorry, Professor. When he gets excited there's no shutting him up, believe me I've been trying for over a decade." Hayato apologized and bowed to the older man. "I'm Hayato Kiryuu and this is Izuku Midoriya, we're All Might's students at U.A. High. It's a pleasure to meet you."

"The pleasure is all mine." David said before seeing All Might hide another cough. His expression changed and looked at his daughter who was happily watching the two best friends. "You know, it's been a long time since I last saw All Might. Can you give us some time to talk alone?" David said stopping Izuku mid-sentence and making Hayato chuckle.

"Of course."

"Melissa, please show Midoriya and Kiryuu around I-Expo." David said smiling at his daughter.

"Of course, Papa!"

"Really?/Meally?" The two asked before Hayato removed his hand from Izuku's mouth, feeling the saliva on it from his constant talking.

"I'm honored to be able to go with future heroes." Melissa said smiling at the two while Hayato wiped his hands with Izuku's hood. "Let's go."

"Okay, I'm looking forward to it!" Izuku said as the two of them followed Melissa out of the room.

"Sam. You go rest too." David said getting his assistant's attention.

"So what do I call you two? Hayato or Kiryuu? Izuku or Midoriya?" Melissa asked as the three of them walked down the hallway to the elevator.

"Hayato's fine with me." Hayato said placing his hands on the back of his head.

"You can call me...Deku." Izuku said smiling at the girl.

"Deku? That's a strange nickname." Melissa said while Hayato tried not to laugh. "Both of you can call me Melissa." Melissa said as they reached the elevator and she entered first.

"Ochaco's gonna be jealous~" Hayato sang quietly as he entered before Izuku.

"Like Yaoyorozu wouldn't be either. They're not here anyway so we don't have to worry."

"Wow, this is amazing." Izuku said in awe as the three of them walked through I-Expo, looking at the attractions and sights. "Looking at it like this, it's hard to believe that this is a man-made island."

"We have all the facilities of a large city. The only thing we CAN'T do is travel." Melissa said as the other two continued looking around.

"Who needs to travel when you're on a moving city? Like being locked in somewhere hasn't ended badly ever." Hayato said making Melissa giggle.

"All the scientists and families that live here have a duty to confidentiality to keep information from leaking out." Melissa explained before Izuku stopped and screamed happily.

"It's the Monster Hero: Godzillo!" Izuku yelled as a colossal Godzilla-like monster wearing a cloak with a flame design walked in front of them.

"He must have been invited by a sponsor." Melissa noted while Hayato looked at the hero in surprise.

"How did he even get here...?"

"And there's a party with all the industry guests tonight, too. But the two of you'll be at that too, right?" Melissa asked with an embarrassed smile and blush.

"Of course." Izuku said smiling back at her. They continued walking before Melissa excitedly ran forward and pointed at a nearby building.

"Deku! Hayato! You should definitely check out that pavilion!" Melissa yelled before leading the two inside.

"So many of the newest hero items in one place!" Izuku yelled in awe as they walked around to see several different machines in one place.

"Deku, look at this! This multipurpose Beagle can fly, of course, but it can also move underwater." Melissa yelled showing Izuku a Ray-shaped vehicle with a video of it flying and speeding through the water.

"Wow!"

"You can wear this diving suit up to seven thousand meters in the deep sea." Melissa said showing Hayato a tube with a white diving suit inside of it going down. But what caught his attention the most was the near alien-like design of the suit.

"I think I saw a movie like this once."

"These goggles are equipped with 36 different sensors." Melissa said leading the two to a display with a robotic helmet that she then placed on Hayato's head. The middle of the helmet lit up and showed several different screens with different areas of the expo.

"You can see too much!" Izuku yelled in shock while Hayato noticed a screen showing the airport they came in from and a group of mysterious men in front of it. He shrugged it off and tried to remove the helmet before realizing, it was not going anywhere.

"Oh shit."

"But you know, almost everything here was created based on things Papa's patented." Melissa said as the three of them continued walking, Hayato walking slower behind them while he tried ripping off the helmet.

"No way!" Izuku yelled looking at the different machines in wonder.

"Each and every item here helps heroes around the world in their work." Melissa said looking at the different inventions with pride.

"Does this thing help with torture or imprisonment, if you can't take it off?!" Hayato yelled making the two turn around to laugh at him.

"You really respect your dad, don't you?" Izuku asked looking at the girl.

"Of course! My dream is to become a scientist like him one day. Like in the same way you love Uncle Might!" Melissa said smiling at Izuku. His face then changed color to bright red as Hayato burst into laughter.

"I-I mean I really respect him and all but-" Izuku said rubbing the back of his head embarrassed.

"You're really having fun, Deku." Izuku snapped around to see his girlfriend standing behind him with an all too calm demeanor and smile.

"U-Uraraka! What are you doing here?"

"You're really having fun." Hayato continued laughing at the sight in front of him before he froze up as well.

"Ahem. You boys seem to really be enjoying yourselves." Momo said before an idea crossed Hayato's mind remembering the helmet on him.

"Hello. I am the I-Expo Welcoming Droid, I am made to look like the person you feel the most comfortable with. How may I assist you today?" Hayato said turning around to look at his girlfriend before seeing an all too familiar face next to her.

"You're such a goof, Hayato!" Mira laughed as Hayato sighed in defeat.

"We heard everything." Kyoka said twirling her jack around her finger.

"Friends of yours?" Melissa asked Hayato making him nod while Momo tensed up seeing this. "I'm Melissa Shield! I was just showing Hayato-" Momo tensed up further. "-and Deku-" Ochaco's smile grew and she moved her head slightly to look at Izuku. "-around the expo while my father and Uncle Might catch up.

"Uncle Might?" Kyoka asked confused.

"Yes, they came with-"

"Wait!" Izuku yelled jumping up to stop Melissa only to tackle Hayato instead, finally freeing him from the helmet.

"So you all go to U.A. too?" Melissa asked as they all sat in a cafe. Following the awkward exchange in the pavilion, Hayato had the idea to grab something to drink on such a hot day and they all moved to a nearby cafe to continue talking. "And you all got to work with professional heroes?!"

"I didn't really do much other than patrols." Ochaco responded rubbing the back of her head.

"I got involved in an incident and helped hostages." Kyoka said taking a sip of her tea.

"Meanwhile all I did was film a commercial." Momo said defeated as she remembered her internship.

"Not me, I'm still too young to go there yet." Mira said embarrassed before taking a photo of Godzillo walking nearby.

"It's still something! Working with heroes must be so exciting!" Melissa said making the girls smile and nod. Meanwhile the two boys sat in the table next to them with Izuku and Hayato hiding their faces in embarrassment.

"Uraraka was jealous..."

"Momo brought my sister and they found me hanging with another girl...god I hope grandpa doesn't hear about this."

"Take this to lift your spirits!" The two looked up hearing a familiar voice to see Denki standing wearing a waiter's uniform and placing two glasses of lemonade in front of them.

"Kaminari?"

"What are you doing here, man?"

"The expo wanted some help for the week, so I figured why not? It's a good way to earn some extra cash and meet some hot babes." Denki explained before noticing Melissa with the other girls. "Like that hottie! You have got to introduce me!" Denki said to the two making them sigh.

"If you're taking their money, you should at least be doing work if you have the time to talk!" The three turned around to see a familiar sight in his white knight hero costume running towards them.

"Iida?"

"How did you get to come here?" Izuku asked as he stopped right in front of them.

"I come from a hero family, but since I'm the only one who was free: I got to come." Tenya explained catching Momo's attention.

"Yes! Thankfully you still had an extra invite to bring Mira along, thank you Iida!" Momo said making Tenya smile and nod to them.

"Why of course! She has as much a right to be here if she hopes to be a hero as well." Izuku smiled at the sight in front of him before a giant explosion in a nearby pavilion caught his attention.

"What was that?"

"And his clear time is 33 seconds! That puts him in eighth place!" An announcer yelled as the group made their way to a mountain-like pavilion to see a familiar red-haired boy emerge from a cloud of smoke on a screen.

"Kirishima?!" The members of Class 1-A yelled in shock while Melissa looked in amazement.

"Is he also...?"

"Yep, he's a classmate too." Izuku said before feeling a dangerous aura.

"And it's time for our next competitor!" The group looked down and Izuku jumped up in fear as Katsuki walked up.

"Kacchan?!"

"Now, Villain Attack! Ready...go!" On cue, Katsuki jumped forward and to every robotic target they were supposed to hit. He hit and destroyed each one with ease while Hayato looked on with a smile.

'Damn, I've been so wrapped up with our stuff that I didn't notice how better Bakugo's gotten.'

"DIE!"

"Die?" Izuku asked quietly as Katsuki destroyed his last target.

"This is amazing! He cleared it in 15 seconds! He's in first place!" Katsuki landed and began making his way out keeping his eyes closed.

"Oh, isn't that Midoriya and Kiryuu?" Eijiro asked making Katsuki's eyes snap open. He looked up and looked at his childhood victims before jumping up until he was in front of them.

"Why are you here?!"

"Making new friends, better question is: why are YOU here, Bakugo? You too, bro! Did you two get invites?" Hayato asked leaning over to call out to Eijiro.

"Bakugo was invited since he won the U.A. Sports Festival. I tagged along for the ride." Eijiro explained rubbing the back of his head. "So, you all gonna try this out too?"

"It's no use, I'm going to still be better than the rest of them!" Katsuki yelled making Izuku nod nervously.

"Yeah, that's true!"

"You won't know if you don't try, Deku." Ochaco said making Izuku nod again.

"Yeah, that's true!" Izuku said nervously before realizing what he said.

"Then hurry up and get your results, you damn nerd!" Katsuki yelled grabbing Izuku by the collar and throwing him over the railing. Izuku landed and sighed as he readied himself.

"And now we've got a surprise challenger! What kind of results will HE get?!"

'I should push it to this limit so my body can grow used to it. One for All! Full Cowling! Fifteen percent!' Izuku pushed the power of One for All through his body and a powerful gust of wind surged from him, signifying he was ready.

"Villain attack! Ready...go!" Izuku then darted to the next from target to target, destroying them with less effort than Katsuki did. He landed after destroying the last target and deactivated the Quirk feeling his body ache slightly. "That was amazing! He cleared it in twelve seconds! That puts him in first place now!" Melissa's eyes widened at the sight while Katsuki began to grit his teeth angrily.

"That's bullshit!"

"And that's my boyfriend for you!" Ochaco yelled happily making Izuku blush and rub the back of his head.

"Why should he have all the fun?" Hayato yelled jumping down as well. "I'm next!"

"And another sudden challenger enters the fight! Will he finish faster than our last competitor?!" Hayato smirked and put on his cowl, his eyes shining gold mixing with the gold lenses as his body began to vibrate rapidly. Mira and Melissa looked on in surprise as he cracked his neck and knuckles. "Villain attack! Ready...go!" Hayato then ran as fast as he could, dashing through each robot with ease knowing he was making good time. But then as he reached the last robot, it changed to look like Blitz extending his arm out to him. For a second he turned his speed off before snapping out of it, quickly turning it back on and tearing through the last target. "Clear time is thirteen seconds! That puts him in second place!"

"Hayato's so awesome..." Mira said as she gulped seeing her brother breathe heavily.

"Well of course, that's MY boyfriend after all."

'Their powers are like Uncle Might's...amazing...'

"Damn, I couldn't beat Izuku's time!" Hayato laughed rubbing the back of his head as he and Izuku walked up to be with them again. Then they felt the temperature drop only to see a wall of ice form behind them.

"Awesome! His clear time is fourteen seconds!" The group looked down to see Shoto standing with his right hand on the ground before standing up.

"Todoroki! You actually showed up!" Izuku yelled happily making Shoto turn around and smile at him.

"Of course. I'm glad to see you're all here."

"I lose to these nerds and now to that half and half bastard?! Fuck that! I'm going again!" Katsuki yelled stomping back down.

"Nighteye? It's odd to get a call from you." Nighteye sat in his office and fidgeted with a stamp from his desk as he sat on the phone with Sorahiko.

"Gran Torino, if I may ask: where's Hayato?"

"Hayato? He went to I-Island with Toshinori last night." Sorahiko said making Nighteye put his stamp down and rub his forehead in frustration. "Why?"

"Give him a call in the morning."

"Why?"

"Just to talk to him, and to let him know I want to talk to him about something important." Nighteye said ending the call. He gritted his teeth as he remembered last time he used his foresight on his intern, seeing his trip to I-Island in it and both him and Izuku wearing destroyed dressing clothes and covered in blood and wounds. "Damn it, I hoped it would've been later in the week so I could stop them."