Greetings fellow weebs and Otakus. it's your boy Again,Shinobi 360, and back with a New story. This time we'll be looking at merging two universes that are although so different,fit so well. I'll be taking a slightly different approach than most other fics based on these two beloved shows. Now Before we begin,here are some tips to keep in mind:

1) The Ben 10 timeline is during Ominverse, and is after Maltruent's defeat.(Ben,Gwen, Kevin, and everyone from Ben 10 who appeared before Omniverse,all have their Af/UA appearance)

2)The My Hero Academia timeline is during S2. And Before the Tournament arc begins.

3) There Will be potential Ships for Ben though, But that possiblity won't be explored until later in the story.

Disclaimer:I do not Own Ben 10 or My Hero Academia in any way. They are Both owned By Man of Action and Kohei Horikoshi. Enjoy!

Chapter 1

The Debriefing

Location:Bellwood,U.S.A

Time:8:53pm.

It was Nighttime. The streets were quiet. Almost like it was devoid of any life except for the conditional passing of Citizens who were still awake. The street lights also did help to signify that some people were still awake too. However,As a couple who were sitting on a bench were conversing,a vehicle colored Blue and Black whooshed past them, much to their dismay.

''Kevin slow down will ya? we've not in an underground drag race" Says a Boy with a Green jacket, Black undershirt and blue jeans. The Boy sat at the back seat of the car.

''Relax Tennyson, it's almost 9, nobody's going to be around here at this time, so you got nothing to worry about." Says a Boy with a black top, And long grey undersleeve. This boy is identified to be Kevin who is also the person driving the car.

''If you include the fact that you're breaking every basic speed law in the process however,then there is something to worry about." Said a girl with red hair in a ponytail, along with a red long sleeved sweater and a Black stockings under a black Skirt. She sat at the passenger seat alongside Kevin. she was also pouting, showing her displeasure with the way that Kevin was driving. Kevin then looked over to her and Began

''Aw c'mon Gwen, I'm just doing what's on everyone's minds, and that's getting us to Plumber base to find Out what's the big deal that Max was talking about." He said, trying to pacify her.

''Doesn't mean that you should risk getting us in trouble with the law while doing so"Said the Teenager In the back

''Thank you Ben"Said Gwen not entirely out of gratitude, but in efforts to get under Kevin's skin which seemed to be working

''Tch,Fine you win, I'll slow down"As he said this,The Car began to decrease in speed.

''But don't start whining to me if the trip takes longer than usual." Kevin quipped back.

''No promises Kev"Said Ben smirking. Suddenly,He then began speaking to almost no one in particular

''You know I'm not too psyched about being derailed from our road trip though. These past few weeks have been pretty Tense. I'd like to take a break from it all to be honest" Said Ben looking outside the window. This statement however, Made Kevin to raise an eyebrow in surprise

''Never thought I'd hear those words from your mouth before Tennyson" Said Kevin

''Me neither" Gwen added,Then continued

''But i understand. We've been through a lot, And a good vacation could go a long way. Grandpa Max understands that as well. I'm sure he wouldn't ask us to put our vacation on halt if it wasn't for something urgent."

''Well, whatever it is,It must be pretty important, seeing as how he couldn't tell us over our badges." Said Kevin, remembering how Each of them was contacted individually to come to Plumber headquarters at night. He wasn't the least pleased with the news, but he had come to Trust Max's judgement, surprising both himself and His friends when he offered them a ride to Plumber base with no qualms. Rook was already with Max,so they all made a mental note to talk to him about What Max had in store for them.

''I know, it's just that, part of me wishes that this could have happened later." Said Ben, drifting away to his thoughts. This made his friends to worry a bit.

''Ben,are you alright? Is there something you want to tell us?" Asked Gwen

''Nah, don't mind me. I'm just tired .You were the one who woke me up after" Said Ben with a bit of a giggle. This statement was true, for as Gwen looked at him,she noticed some slight bags in his eyes, indicating tiredness.

''Looks like the Universe's greatest Hero can't get over not getting enough of his beauty sleep" Kevin teased

''Last time I checked, you were just as guilty" Ben quipped Back.He then proceeded to put a hand to his chin, and continued

''If i remember correctly, there was a time when An alien was on a rampage, and we had to come get you. You were mumbling in your sleep, and didn't even wake up until five minutes after" He Said smirking

''I did not,i woke up as soon as i heard you guys calling me" Kevin replied with mock hurt. Gwen then began to giggle.

'"C'mon Babe, don't you believe?"

''No.Sorry Kevin. I remember that scenario very well. You gotta admit though, you're pretty cute when you're sleeping." Gwen said, making Kevin blush a bit.

''You know,for a guy who's always acting tough, you're pretty much a cinnamon roll." Said Ben, making everyone laugh. They all began to make constant quips and jokes,all to help take their mind off the Long journey ahead, and it was working. Normally they would have used the Rust bucket iii, but seeing as how Team Alien Force hasn't been active for sometime,The Rust Bucket iii was left back at Plumber Headquarters. They then had to resort to Kevin's Car. Not it bothered them anymore though, seeing as how they were all clearly enjoying each other's company.

Time:9:33Pm

(A/N: I haven't Watched The Classic Ben 10 series for sometime now,so I can't remember exactly where Plumber Headquarters is stationed at. But for the sake of this fic, and my foggy memory to which i apologize for, I'm creating two branches for Plumber Headquarters,one in space and one on Earth.)

The Car stopped at an abandoned area with little houses,As the Car drove into a more secluded portion of the land,A mechanism beneath the Car suddenly brought it below the ground. As this happened,The Car was revealed to be going through an underground tunnel. After a minute,The car was stationed at a space filled with Vehicles that seemed to be out of this world. As the Teens came out of the car, Kevin then remarked

''And that, Ladies and Gentlemen,is the end of our tour around Bellwood City.I hope that The experience was up to expectations" Kevin said with mock sincerity

''Oh of course,my good man,in fact,I found the entire Experience to be a blast." Ben said in a fake British accent, causing the two of them to burst into laughter. This however, just led Gwen to shake her Head,and smile saying

''Boys will be Boys" She then turned her attention to her friends, saying

''Come on guys, Grandpa Max must be waiting for us right now."

''Right behind you Gwen" Kevin said,Then followed suit along with Ben. As they walked through the facility, Greeting Plumbers that they also passed by on the way,They eventually stopped when they entered a room with an individual who was tall in appearance,along with periwinkle blue coloured fur, along with black markings on his face. The middle of his face was white, and he also wore a very durable blue and black armor. As he saw the Trio,he then called out to them.

''Rook, sorry if we took so long to come here. We don't have the Rust bucket iii with us at the moment,so we had to come with Kevin's car" Said Ben, Gesturing for a handshake, to which the Individual now identified as Rook accepted.

''Rook, how's it going buddy?" Kevin gestured for a fist bump to which rook also Accepted.

''Greetings,Ben Dude,Kevin and Gwendolyn." Rook said, Finally speaking up

''Hey Rook" Said Gwen,who then continued,

''We were already hoping to meet you first."

''Is that so? why is that?" Rook asked

''We thought that it would be best to ask you on what the emergency is that Grandpa Max asked us to come in here for. Seeing as how you came here ahead of us, we believe that you already know the reason why." Answered Gwen.

''Ah yes." Rook said, fully understanding the situation.

''The Reason as to why Magister Tennyson summoned you isn't exactly one of an Emergency, but rather one of a request."

''A request Huh? what kind?" Asked Kevin

''I think it would be best if Magister Tennyson were to elaborate more on that." Said Rook. He then gestured for The Trio to Enter inside a room which they followed. As they Came to a stop,They Saw an elderly man with a white shirt covered up with a red buttoned up Hawaiian shirt with Floral design. he also has a wrinkled face Along with White Hair. And he wore Brown pants along with black shoes. The trio immediately recognized the Man,evident with when Ben's Face started lighting up.

''Hey Grandpa Max" Said Ben. The Man,now identified as Grandpa Max walked towards the Trio and gave each of them a hug. although uncomfortable at first, Kevin eventually eased up.

''It's good to see you Kids." He said, Taking close observations of each of them.

''You look pretty tired Ben. Didn't get enough sleep." Max said, taking notice of the bags under his eyes.

''Yeah. But it's alright. You called to tell us something important though." Ben said

''Yes i did" The smile on Max's face shifted just a bit. Noticing this,Gwen then said

''What is it Grandpa?"

He responded, saying

''Are any of you aware about Pro Heroes?" He asked. Although confused by the question at first,Ben managed to answer for the group

''Yeah, They're basically Superheroes who do hero stuff once granted permission by the government. They operate majorly in Japan"

''I wouldn't necessarily call them heroes though." Said Rook, not too pleased about the subject matter.

''Why's that rook?" Asked Gwen, wondering where he was going.

''From my studies and the understanding that I've come to formulate during my Education under the Plumbers, A Hero is an individual, either man or woman who puts their lives on the line for the well being of the masses, Combating any form adversity without seeking any type of material or self gain in the process. it is an ideology That I've come to accept. And unfortunately, these Pro Heroes do not fit this ideology." Rook said, giving a perfect answer to Gwen's question.

''Got that right. They're just a bunch of weirdos with powers who only care on appearances and fame. They ain't doing it for the people, but for themselves." Said Kevin with a hint of disgust in his voice. Ben had no problems with their statements though,As the few Pro Heroes he Had bothered to keep tabs on always put more effort into talk shows and Camera poses.

''I have a question though" Ben said.

''How did these pro hero's appear? They weren't all that famous until some years back" Said Ben,as his mind began to trail to earlier memories of when he was six,when Pro heroes had first become a new phenomenon. He used to idolize them a lot, but as Time Passed, he realized that not all of them were actually the heroes they claimed to be.

''Although there is no definite answer to that question,it is believed that the reason for the existence of the Pro Heroes all began from an incident that occurred more than ten years ago. The incident was first reported to have occurred in Japan. Gradually,Around that time,a majorly of the human race had began to exhibit signs of superhuman powers on another level. It caught the world by Storm, and as such,a lot of chaos erupted as a result." Explained Max. However,he wasn't quite done yet.

''''Many individuals began to abuse their gifts, and committed a lot of crimes and felonies much easily because of it. These acts did not go unnoticed, As others who also possessed powers decided to use their abilities to combat the tyrants, and protect the masses. The People began to love them, and after much Debate,The Choice to Become a Hero, which was one believed to be of nothing short of fiction, became a reality in the form of a Profession. This however, only lead to a large burst of Criminal activities. So as more Heroes began to appear on the scene,so did villans.However,due to the efforts of the many Heroes from before,The significance of the villains has taken a massive drop,that is, until recently." Max then took a pause in his lecture, and Looked at the others to be sure that they were paying attention. After confirming that they were,He then asked a question

''Have any of you heard of U.A high?"

''You mean the U.A high? the best academy in the world for teaching Super heroes." Gwen said in astonishment. Although She wasn't a supporter of the Pro Hero concept,she was still amazed by the very fact that they existed a teaching institution solely dedicated not just to other forms of education, but also to teachings About heroics. Judging from their faces,The Boys were too.

''The very one. it was attacked Last month by a group that calls themselves ''The League of Villains".

''The league of villains huh? sounds pretty corny to me." Said Kevin

''And pretty Cliche"Added Ben.

''What motive could they have had that made them to Attack a school filled with Children?" Asked Rook, whose question seemed to have spoken the lingering thought on everyone's mind.

''That's the thing,They weren't there for the children. they were there for someone else. That also brings me to my next question. Have any of you ever heard of All might?" As Max said this,a obvious sign of familiarity instantly shone on the teens faces.

"Of course we have, He's the Number one Pro Hero." Said Ben.

''He's also the reason for the crumbling of the Villain's dominance" Added Rook

''What does he have to do with The attack on U.A?" asked Kevin

''All the top Pro heroes operating in Japan teach different courses in U.A high. So that could only mean..." As Gwen said this,An expression of Shock immediately clouded her face. Her friends were about to ask her what was wrong until they all froze in place after beginning to think on what Gwen said.

''They were There to kill him." Said Ben darkly

''Precisely. All might is the number 1 pro hero not just because of his accomplishments, but also because amongst the Heroes, he's the most powerful. The fight in U.A high was speculated to be a very fierce one,Due to the intense wind pressures that came out from the building during the fight. Unfortunately,Not much could be covered on exactly what could have caused that until one of the villains that was captured opened up about how they was a monster that was specifically designed to kill All might.Apparently the wind pressures was as a result of the fight between All might and The monster."Max said this part of the news with a bit of sadness though.

"However the experience left a strong impression on some of the students and not from the better. That's where you four come in." As Max said this his hand went to the side a table he was standing beside.As he then tapped a button on it,The Tv screen on the room, which was once Off, Suddenly came on. What came on however, completely took the teens off-guard as they saw what appeared to be a mix of a dog,a mouse and a bear. The individual's head resembled That of a mouse with circular black eyes,a large scar over the right eye, relatively square shaped ears with pink-pale insides slanting outside from the top of His head,and an elongated muzzle with a small round nose. He has white fur and to establish the dog comparison,has similar paws with pink pads to that of one. He also has the tail of a cat. Perhaps the most surprising feature of the individual was that he was dressed in human clothing. He wore a white dress shirt,a dark red tie around his neck,a black double breasted waist coat and matching dress pants.He also wore orange lace-up sneakers. He also has a tail similar to a cat's.

''What the heck is that thing?" Asked Kevin.

''Kevin, that thing has a name, and it's a he." Replied Max

''Still not the strangest thing I've seen though." Said Ben more to himself, before then addressing his Grandpa

'',Mind telling us your name? i think it's a he." Ben said,directing his attention to the Individual on the screen.

''Of course."The individual said. It first cleared it's throat before beginning.

''Greetings Maxwell Tennyson,or should i call you Magister Along with Benjamin Tennyson and his associates, My name is Nezu, Principal of U.A High. i know that you may wondering how is it that an animal can be able to speak the human language so fluently."

''Not Actually, I'm just surprised that you can English so well since your Based in Japan." Said Kevin,with his arms folded.

''Ah yes,This is as a result of my Quirk:High Specs that grants me an intelligence far superior to that of any human."Said Nezu on the screen, taking accounts of all their different body languages to be sure that they were following. He then nodded his head in satisfaction, being able to determine that they were following.

''Speaking of Quirk's,What are those?" Asked Ben. Nezu then answered in a matter of fact tone.

''Quirk's are special superhuman abilities that a person can possess. They vary from individual's"

''Why call them Quirk's?"Asked Ben

''i'm not entirely sure myself.But it's a name that was Best suited for when the superhuman community came to life.t." Said Nezu. He then continued, saying

''With That aside,I apologise for contacting you on such short notice, especially since we haven't actually met before. I call on you, However for an urgent request.one that can Very much help to change the lives of My student's for the better."

This very statement brought the group's curiosity to it's peak.

''What could be so important that it involves your students?" Asked Rook

''''As you all know, Last Month,U.A High was attacked by The League of Villain's, their sole motive being to kill ''The Symbol of Peace".Began Nezu's reply to Rook's question.

''Yeah,we heard, What's That got to do with us?"Said Kevin, only to be elbowed by Gwen,Who then gestured to him to be quiet. Nezu however took notice of this display, and said emphatically.

''You are quite Correct, Kevin Levin,This matter is not one of direct concern to you and your group as how it happened just a few months ago..." Nezu suddenly stopped, Like as if anticipating a question.

''Wait a minute, how do you know my name?" said Kevin, Which Made Nezu to smile Even more, knowing that his prediction was spot-on.

''I had already conversed with Magister Tennyson before seeking your attention,so i know all your names. Now if you would be so kind as to let me continue..." He said, looking directly at Kevin

''Alright, Carry on Mr Fuzzball"Kevin said with his arms in the air in sign of defeat.

''Although i would prefer if you would call me Mr Nezu,i appreciate your understanding. Back to where i was,The Raid of U.S.J,the actual building in where the students of U.A high were attacked, left a lasting impression on not just the students of U.A , but also their Guardians.And although some have tried to use this experience to further brace themselves for the Many dangers that come with being a Pro Hero, some have already gradually started to succumb to doubt, and as such, are considering withdrawing from U.A." This statement perked a lot of confusion from the group, but as to honor his previous request,they did not question Nezu.

''That is where you Come in, Ben Tennyson.You and your associates. You are free to voice your concerns"Said Nezu

Almost immediately,Rook responsed, saying

''I wish not to sound improper as i say this Mr Nezu, But exactly what form of service could we offer you that could be done by more experienced individuals.Clearly this is a sensitive matter,one of Helping to set The children's ideals in proper standing. A task that I'm quite sure that the teachers in your disposal will be able to give the adequate attention it desires."

''Thank you Magister Rook Blonko for your contribution.I think it is safe to say that you've spoken the minds of your comrades." Said Nezu,to which the others nodded in agreement.

''Yep,"Said Kevin

''Pretty much" Said Ben

''You see..." Continued Nezu.

''Many of the students in U.A High are young and aspiring to become Pro Heroes in other to leave their own impact on the society. Alas,not Many of them are actually Aware of the Obstacles and Challenges that will come when they eventually achieve this Dream. The experience at U.S.J was a huge eye opener for them. Such a huge one in fact that some have started to develop mindsets that they are not cut out to be Heroes."

''We've tried multiple attempts to improve on the mindset of those who opened up about it,with efforts from each teacher, but to no avail."

''At a point,we were almost about to drop the matter until another time, until Our Symbol of Peace,All might,spoke out and made a suggestion. That suggestion was to enlist you and Your Associates Ben Tennyson to come and Tutor our students for the course of three weeks." This statement left everyone in the room, aside Max in literal dumbfoundment.

''You're asking us to teach your class? I'm sorry but i think we're a little underqualified for that"Said Gwen, still trying to find her bearings over the Suggestion that Nezu just made

''First off, we've never even thought a class before, nonetheless have we taught super powered kids. Asking us to help you babysit is a disaster waiting to happen." Said Kevin

''My argument remains the same,they are better suited individual's for this job"Said Rook. Nezu then began to think to himself before then asking the only member of the group who hadn't spoken

''Is there anything you would like to say regarding this matter,Ben Tennyson?"Asked Nezu,diverting his full attention to Ben.

Ben in question,Then took a deep breath and said

''You seem to have a lot of faith in thinking that we can help you with this,why is that?" Ben asked. Nezu smiled,Then replied

''Ben Tennyson, you know first hand the many complications that can come with the profession of becoming a Hero. You've been experienced in the field since you were 10 years old. The path of a Hero,one that must have once caused you much hardships in the past,has helped to mould you into a better person. Your experience and Sense of Justice play a huge importance in the creation of a great Hero." The Young Hero was astonished by Nezu's words, but before he could ask him his question,Nezu then turned to Rook

''Rook Blonko,you once came to this world in hopes of not just becoming an accomplished Plumber, but also to be brought under the wing of Ben Tennyson. As you got to Know him however, You began not only to see his flaws, but also his strength's as well. Staying unwavered in your moral code and the assistance of Ben Tennyson and Fellow plumbers, you came to understand the essence of what helps to make not only an astounding plumber, but an astounding individual as well. your Bravery and Unwavering commitment to law and order also possess great qualities to a hero's growth." Rook was left speechless by his revelation. Nezu then turned to Kevin.

''Kevin Levin. You were once a young boy who was lost, without a purpose, and as such, only chose to Pursue his own personal gain. However, Due to your constant clashes with the Tennyson's, You were always left frustrated and unfulfilled at every attempt. One fateful day, you were presented the opportunity to make up for your past mistakes,The opportunity for redemption. It was an opportunity that you ceased without much certainty. But as time passed, you began to understand the importance of Friendship, Trust, Loyalty, selflessness and Love. All of which helped you to become the man you are today. One much greater than your past self. Your ability to acknowledge your flaws and improve yourself over them are one of a hero's greatest assets." As Nezu said this, Kevin let out a large grin, one of obvious satisfaction. He then turned to Gwen

''Last, but not the least Gwendolyn Tennyson, You have been an exceptional Girl since you were younger. But you were not without your follies. Your arrogance and Pride were perhaps your greatest flaws. Although not close to the level of your Cousin's, they were still greatly significant. As you began to grow older, however, you opened yourself to new feelings, Feelings that were once strange to you. Feelings of humility and compassion. Your Concern for others and your level-headedness are the foundation of a great Hero." As Nezu said this, Gwen began to think to herself in self analysis.

''Each of this unique qualities that I have called out are the great potentials i see in each and every one of you. Not just me however, But also Magister Tennyson as well" Max was standing beside the Television all the while nodding in agreement with all that Nezu was Saying

''These unique traits i see each of you being able to contribute them to the lives of the Students in U.A high in ways even you would be surprised of it's effectiveness. Not that the teachers in our school are lacking of them though, but the closeness in age that you share with the students plays a huge factor in this request. With your efforts, and our support, you would be doing not just a great service to our School, but to the society at large. So... What do you say?"

The final part of The principal's statement seemed to have Brought The Group out of a deep trance. As their regained their composure, they began to think to themselves, digesting all that had been said in the past 1 hour. After five minutes of thinking,they all looked at each other closely, without saying a word. it was like as if they were communicating through each others minds. After another minute, They all smiled,then turned towards the Tv. Ben then spoke out on the decision that they had all made.

''We're in" Said Ben enthusiastically

Principal Nezu smiled his brightest, grateful that his efforts were not in vein

''Excellent. Team Alien Force,your mission starts now" He said In excitement

Never give up, Failure is a sign that you are trying (Go beyond PLUS ULTRA)

The gang were seen to be entering the Rust Bucket iii( it's basically a large jet with a green color scheme) Before they entered however,They stayed outside the hanger door to say their good-byes to Max.

''We'll keep in touch Grandpa" Said Gwen and Ben in the middle of a hug.

''I know you will. But Take care of yourselves. All of you" He said with a smile on his face.

''We will" Said Ben with a smile

As Gwen and Ben were about to enter, Kevin suddenly spoke out saying

''Hey Max,that reminds me, you never did tell us how you knew Mr Fuzz-ball."

''Yeah, That's true. How do you know him Grandpa?"Said Ben. Max replied, saying

''I met Nezu during an infiltration on a Forever Knight Headquarters in the states some years back, before i retired. He was their Guinea pig on some experiment to make some sort of Breakthrough with Animal genes mixed with Human DNA to synthesize a weapon that could kill off a particular species of an alien race."

''Woah,hold up,Grandpa. Nezu was a lab rat?" Said Ben

''That explains the Scar"said Kevin

''And how he must have gained his intelligence."Said Rook

''What happened after that?" Asked Gwen

''After Saving Nezu, and Shutting down the Forever Knights Laboratory that operated on him along with the base. i took him back to Plumber Headquarters to help him cope with the experience. It wasn't easy though,as it lead to a huge Emotional disorder on Nezu.But after some months,We were able to help him get better. We offered to Take him to Japan around the time that Quirk's started manifesting. It was the only society that we thought could help him feel like he belonged. So he brought him there. I haven't heard from him ever since until today." Said Max with a hint of sadness and Regret in his voice

''It's ok Grandpa,You did everything you could do. And I'm sure he doesn't hate you for it." Said Ben.

''I agree, You were there for Him at his lowest point, whatever agony he must have gone through certainly hasn't affected him in a negative way, but rather helped him to become a better person"Said Rook

''And it's all as a result of your kidness"Said Gwen. Max's smile returned, Making him to have a group hug with everyone.

''Alright guys,time to go" Kevin said right after they seperated. As they boarded the jet and took to the sky's,They could see Max waving to them on the ground,to which they responded.

"Vroosh" Was the sound that came from the jet,as it flew out of the convinient line of sight. Off went our Heroes on a New Journey. One to help restore Hope to a place where it seemed to be Fading

To Be Continued!

A/N

So this is the end of the first chapter of the Ben 10 and My Hero Academia crossover story. Hope you enjoyed it. i wanted to squeeze in more stuff into this chapter at first, but i realized that this Chapter alone was already hitting 5k words,So I'll add in more detail of the events that transpired in this chapter in the upcoming ones, Specifically Nezu's relationship with Max.

Also next Chapter, we'll be seeing The U.A students,so get ready.

Constructive Criticism is welcomed, But not flaming.

Thanks for Reading My Story, Have yourself a good one.