Well, Hello there.

Here we are with a new fanfic.

This time is a My Hero Academia x Digimon Fanfic.

This is going to be a bit long since I'm going to clarify a few things before I start, so hang on.

- The fanfic will happen only in the world of My Hero Academia. There will be mentions of the digital world but for now it will only be in My Hero Academia.

- I will take the ideas from the Digimon Frontier anime. You know, the anime where it's the humans that digivolve.

- For obvious reasons the story is going to change in several parts, I will try to follow the events of the canon, but I will not be able to avoid making several changes.

- In this story the One for All won't be relevant so don't be surprised if I rarely mention it.

- As you know, English is not my first language so please forgive me for any grammar mistake.

Lastly but not less important enjoy.

Disclaimer: I don't own any of these characters. My Hero Academia belongs to Kohei Horikoshi and Digimon belongs to Bandai.

- "Hello"- People talking.

- "Cool"- People thinking.

- "Let's go!"- Digimon/All Might/Creature speaking.

- "Is now or never"- Digimon/All Might/Creature thinking.

Chapter 1.

The Origins.

- "Paradise Lost Punch!"- It was the cry that was heard one night in Japan. A creature resembling the famous Trojan horse had been attacked, so strong that the poor creature had been destroyed and turned into a data explosion. – "Hahaha. Is that all you got? It seems that the famous ten legendary warriors are a joke."- Said an evil creature. Said creature takes the appearance of a blue-eyed blond-haired man wearing a white bodysuit and a black overcoat. It has ten wings on its back, two on its head, and two at its neck. Its left wings are demonic, featuring black, leathery wings, while its right side has white, feathery, angelic wings save for the wing at its neck, which is dyed black. That was Lucemon Chaos Mode an evil Digimon who only wishes to destroy. He was currently in the human world; he wants to destroy it but there were a few complications. The ten legendary warriors followed him to this world and want to stop him. Currently he has managed to destroy four of the ten.

- "He is too strong."- Said one of the remaining warriors. This warrior is a winged woman wielding a rapier. She is AncientKazemon. – "AncientGreymon, what are we gonna do?"- She asks to her leader, AncientGreymon, he is a four-legged, fire winged dragon.

The mentioned was silent for a few second. – "I don't know. He just destroyed AncientMermaidmon, AncientWisemon, AncientVolcanomon and now AncientTroiamon."- After saying this, the rest of their companions landed next to them. AncientGarurumon, a bipedal white wolf warrior who wields two swords. AncientBeetlemon, a chimeric Digimon whose upper body is a humanoid Rhinoceros beetle covered in a blue and yellow armor-like exoskeleton with spikes on its shoulders and large falx at the end of its arms. Its lower body is a red Stag beetle with six eyes. It has six legs with black thighs. AncientMegatheriummon, a bovine Digimon with white fur that resembles the extinct animal Pelorovis. And lastly AncientSphinxmon, a Digimon of black color and golden wings that resembles the Egyptian sphinxes. – "We have attacked him with everything, but even so it is not enough. But we can't give up, we have to keep fighting!"- After these words the six warriors attacked Lucemon. – "Gaia Tornado!"- AncientGreymon said while creating a tornado and using it to attack Lucemon. Sadly, the enemy easily destroyed the tornado and with another Paradise Lost Punch managed to knock down AncientGreymon.

- "Sharp Claymore!"- Said AncientGarurumon while attacking with his swords. Lucemon easily dodged the attack and using his Grand Cross attack fired ten spheres of light against AncientGarurumon and knocked him down.

- "Tera Blaster!"- AncientBeetlemon attacks with a super-electrical discharge but that wasn't enough to defeat Lucemon, quickly recovering Lucemon used another Grand Cross to knock down AncientBeetlemon.

- "Rainbow Symphony!"- AncientKazemon uses her rapier to play a symphony of super-fused lasers that shine with the colors of the rainbow but is quickly knocked down by another Paradise Lost Punch from Lucemon.

- "Great Snowplow!"- AncientMegatheriummon charged with his horns against Lucemon but the evil Digimon stopped him and used another Grand Cross to knock him down.

- "Dark Blast!"- AncientSphinxmon fires a laser beam alongside a roar, Lucemon avoids the attack and uses another Grand Cross to attack his enemy. Luckily AnciantSphinxmon managed to resist the attack. Seeing the situation and his friends on the ground, AncientSphinxmon made a difficult decision. "My friends. Lend me your powers so I can defeat this monster."- In that, AncientSphinxmon began to absorb part of his friends' powers.

Seeing this, the rest of the warriors began to attack Lucemon to distract him while his partner absorbed the power. All but one. AncientGreymon was watching AncientSphinxmon. – "What are you doing?"-

- "What it takes to end this."-

- "It's too much power, you won't survive. Let me do it, I am the leader, I am the one who must sacrifice."-

- "No. Without your leadership the rest are in danger. Please old friend, let me do it."-

- "Very well."- After this AncientGreymon joined the battle. – "Back off!"- He told to his friends. - "Omega Burst!"- He then induces a super-detonation over Lucemon. – "AncientSphinxmon now!"- After the announcement, the rest of the warriors fall back to a safe distance for their partner to attack.

- "Necro Eclipse!"- He attacks with the ultimate annihilation technique which completely envelops Lucemon in the darkness of death.

- "No. This is impossible! NO!"- After this scream Lucemon disappears in a data explosion.

After the attack, AncientSphinxmon falls to the ground, his companions gather around him. – "Sorry folks, but I think that's as far as I'm going. Good fight though."- After these words AncientSphinxmon disappears in a data explosion.

- "Goodbye. Old friend."- Said AncientGreymon.

- "Now what should we do? Without a doubt, humans will now know of our existence."- Asked AncientGarurumon.

- "Our worlds have never been connected like they are now. We decided never to get involved with humans but now thanks to Lucemon they know of our existence."- Said AncientBeetlemon.

- "Not if we can help it."- Said AncientGreymon. – "Yggdrasil never wanted this to happen. If we use our powers, we may be able to repair the damage done from this fight as well as erase the memories of all humans and any traces we have left. So, everything will return to normal."-

- "Are you sure it will work?"- Asked AncientKazemon.

- "We have no other choice. We have nothing to lose by trying."- After this, the five surviving warriors gathered in a circle and using their powers began to repair the damage and erase the memories of all humans. At the end of this process, the five warriors return to the digital world without leaving a trace of their existence. Or at least that's what they thought.

Qing Qing City, China.

A few months later.

A worried nurse came out of the nursery and addressed a man. – "S-Sir! Excuse me. We have a problem!"-

- "What's going on? Is my son okay?"-

- "He's healthy but that's not the problem. Your son is shining!"-

Japan. Aldera Junior High

A lot of years later.

- "Well, all of you are already third-year students. It is time for you to start thinking seriously about your future."- The teacher told his students. – "Normally I would give them a career guidance questionnaire. But the truth is that all of you want to become heroes, right?"- The teacher said as he threw the papers on the ground. When he said this, all the students began to show their quirks. Except for two.

- "Teacher! Don't include me with these extras."- Said a blonde guy. Katsuki Bakugo. – "I'm going to enter the UA."-

- "Right. Bakugo wishes to enter the UA."- Said the teacher.

- "That's right, I'm the only one who can enter the UA. I will surpass All Might and become the best hero!"- Bakugo said.

- "Now that you mention it, Midoriya also wants to enter the UA."- After hearing what the teacher said, everyone started laughing.

- "Midoriya? You can't get into UA just for studying hard!"-

- "DEKU!"- A furious bakugo yelled as he blew up the green-haired boy's seat. The green-haired man fell to the ground in fright.

This guy is our protagonist. Izuku Midoriya, a normal boy like any other, however there is something that differentiates him from the others. He is part of the 20% of the population that does not have a quirk. Due to his condition, he was always bullied by others. Especially for his dream. He wants to become a hero who saves everyone with a smile.

- "Who do you think you are Deku? You are quirkless, trash. Do you think you are better than others?"- Asked Bakugo in a threatening tone.

- "O-Of course not. Only, it's been my dream since I was little and besides, if I don't try, I'll never know."-

- "Try? Do you think it's a game?! Tell me Deku, what do you think you can do?!"-

Izuku didn't answer anything. After this the rest of the classes passed without any other incident.

Classes were over and Izuku was saving his things, but when he was about to grab his notebook Katsuki took the notebook from his hands.

- "Our conversation is not over Deku. What's this? hero analysis? Are you kidding Deku?"- Said Katsuki.

- "Stop! Return it!"- Said Izuku. However, Bakugo blew up the notebook and then threw it out the window.

- "I will be the first and only one from this mediocre school to enter the UA."- Katsuki said so that with his still steaming palm he grabbed Izuku's shoulder. – "So just in case, you won't take the entrance exam."-

- "Hahaha. As expected, He doesn't dare to answer."- Said one of those who accompanied Bakugo.

- "By the way Deku. If you want to become a hero so much, there is a way to achieve it."- Said Bakugo calling Izuku's attention. – "Throw yourself off the roof and pray that in your next life you'll be born with a quirk."- After this Bakugo left. Leaving a sad Izuku behind.

Izuku was on his way home. He was crossing under a bridge.

- "Fool, if I really jumped off the roof it would be suicide. I won't let those comments stop me. I will become a hero."- Thought Izuku. – "You all heard me! I will become a hero no matter what!"- He yelled at no one in particular.

- "A medium size costume."- Said a voice behind him. Turning around he saw a guy made of sludge. Without being able to react, the guy trapped him. – "Don't worry boy. I will only take over your body. Luckily I was able to avoid that guy but just in case it will only be 45 seconds and it will all be over."-

- "I can't breathe! My body has no strength. I'm going to die. So, this is my end."- A small tear was the last thing that came out of Izuku's eyes before losing consciousness.

Unknown place.

Izuku opens his eyes, the pain had disappeared. However, it was nowhere that he recognized. The place was strange, it was a place surrounded by what seemed to be digital data. Columns and rows of data floated around Izuku.

- "Where am I?"-

- "Izuku Midoriya"- Izuku quickly turns to the direction of the voice, to see a kind of giant red dragon, it had four legs and wings of fire. This obviously made Izuku almost pee on himself.

- "W-What…?"-

- "You can rest easy boy; I'm not going to hurt you. In fact, I have been watching you these last years and I have chosen you to carry my power."-

These words confused Izuku more, however something inside him made him feel safe despite the creature in front of him. – "What do you mean? What are you exactly?"-

- "Forgive my rudeness. I am AncientGreymon, I am a digital monster or Digimon for short."-

- "Digital Monster?"-

- "That's right, as the name indicates I am a creature made of data. However, I am just as alive as you. We Digimon live in a different world from yours. Right now, you are somewhere between both worlds."-

- "Let me see if I understand, you are a creature made of data that comes from another world."-

- "Exactly."-

- "And what do you mean by giving me your power?"-

- "You'll see. In my world, when I was still alive, I was the same as what you aspire to be, a hero. Together with my colleagues and friends we are known as the ten legendary warriors. Although there are none of us left alive. Since my death I was interested in your world and seeing you and everything you've been through, it amazes me that you still have a determination as ardent as fire. That's why I want to help you in your dream."-

- "I don't understand but, if everything you say is true, I still don't understand how I can have your power."- Suddenly a device appeared in front of Izuku. The device was the size of a cell phone. It was red with a black handle on its right side, two white buttons on the bottom and a small screen surrounded by an orange circle.

- "This is a Digimon Scanner or D-Scan. With this you can use my powers and be able to Digivolve."-

- "Digivolve?"-

- "That's right, when I use my powers, your physical appearance will change to be that of one of my descendants, Agunimon."-

- "Does that mean my appearance will change forever?"-

- "No, when you want or when the digital energy of the D-Scan is finished you will return to your human appearance." -

- "I see. Wait, what's going on with my body? Am I no longer in my world?"-

- "No, your body is still in the same place, I transported your consciousness to this place, but don't worry, while you are here time in your world will be stopped so you won't die."-

- "That's a relief."-

- "Now that I've explained everything to you, what do you say Izuku Midoriya, do you accept my powers to use them for good?"-

- "Yes, this is my chance to finally fulfill my dream, thank you very much AncientGreymon-san"- Izuku said to then take the D-Scan, however nothing happened. – "Nothing happened."-

- "Hmm. I see, your body isn't ready to house Agunimon's full power. In this case I will allow you to acquire the form of Flamemon, a version before Agunimon, it is weaker but for now it will work. You must train both your body and mind to unlock the true power of Agunimon."-

- "I'll do it sir."- After this the D-Scan started to glow and a few seconds later Izuku disappeared.

- "Good luck Izuku Midoriya."-

Real world.

The sludge guy was about to take Izuku's body but suddenly Izuku's body started to heat up, A few moments later the sludge guy was roughly thrown away from Izuku. Suddenly, Izuku began to be surrounded by what seemed to be data, a few seconds later the data disappeared and instead of Izuku there was a strange creature.

The creature took the appearance a humanoid-like monkey with large spiked red hair, cut-off horns and elf-like ears that had two gold hoops with green eyes as well as two marks beneath its eyes. It had dark-skin with a white marking on the left side circling its left pectoral muscle, a bushy flame-like tail and three toes with red nails. It wore ankle-length red pants with a belt that went around its sides and a large silver buckle with the symbol for fire on it; it had also red gauntlets that had a large silver ending, red rings around the ankles and red shoulder-pads. That was Flamemon.

- "What did you do?"- Asked the sludge guy.

- "I don't know. But I like it."- Said Izuku while looking at himself.

- "Doesn't matter! I will take over your body."- The villain said while charging against Izuku.

However, thanks to Digivolution, Izuku's reflexes have improved, and he easily manages to dodge the villain. Quickly standing in front of him, Izuku released a strong aura of fire, this attack was so strong that he managed to defeat the villain in a single attack.

- "That was quick. This power is awesome!"- After this, Izuku put the villain inside a bottle that he found lying around. When he thought what to do with the villain, someone appeared.

- "Have no fear! Because I'm here!"- It was All Might.

Clearly, Izuku reacts like a normal person. Going crazy. - "All Might?!"- His surprise was so great that it made him return to his human form.

- "That's an interesting quirk you got there young one. Excuse me, but have you seen a villain made of sludge around here?"-

- "You mean this guy?"- Izuku said showing the bottle with the villain inside. – "Excuse me for using my... quirk without permission, but it was to defend myself."- He said as he handed over the bottle.

- "Don't worry young man. I totally get it so this time I'll let it slide, moreover, a reward for your service."- All Might said as he handed Izuku his notebook, with his autograph on it.

- "You signed it! Thank you so much!"-

- "No need young. Thank you very much for your help. Now I must deliver this villain to the authorities. Keep it up and you will become a great hero someday."- These words surprised Izuku. All Might said that he could become a hero.

- "Thank you so much! That means a lot to me!"- All Might just smiled and jumped away. – "I thought this would be the worst day of my life. But it turned out to be the best."- Izuku thought before running home. – "I can't believe that everything that happened to me was real. I must listen to AncientGreymon and train in order to unlock the true power of my D-Scan."- He thought as he looked at the D-Scan in his right hand.

Midoriya household.

- "Mom! I'm home!"- Izuku said while entering his home. – "Something cool happened to me today!"- He said in an excited tone.

- "Izuku?"- Inko Midoriya asked. It had been a long time since Inko had seen her son so happy. The last time was before he was diagnosed as quirkless. This brought a smile to Inko. – "And what happened to you?"-

- "Actually, two things happened to me."- He said while pulling something out if his bag. – "The first is that I met All Might!"- He said as he showed All Might's autograph to his mother. This of course left Inko speechless. Without letting his mother answer Izuku continued. – "The second is that I have a quirk."- This of course confused Inko.

- "Izuku, I think you're imagining things. I can believe the All Might thing because of the autograph, but the quirk thing is impossible, after all, the doctor said it."-

- "No, I have a quirk. Please let me show you."-

- "Very well. Show me."- Said a skeptical Inko.

Quickly Izuku took out his D-Scan from his backpack, extending his Left hand a wheel of data began to surround said hand. Once the D-Scan made contact with the data, the Data began to surround Izuku and a few seconds later they disappeared but instead of Izuku Flamemon appeared. – "You see? I have a quirk!"- Said an excited Izuku.

- "I-Izuku, that's incredible!"- Said a happy Inko.

- "Now I can become a hero!"- Izuku said as he returned to his human form.

- "Of course you can!"- Said Inko hugging his son. Izuku gladly returned the hug.

Two days later.

Dagobah Municipal Beach

- "AncientGreymon said that I have to train in order to use the true power of the D-Scan."- Izuku thought before turning to see all the trash on the beach. – "Perfect. My goal will be to clean this entire beach before the UA entrance exam. With this I will not only train but also help the community."- He thought before starting to collect the garbage from the place.

And that's how Izuku's ten months of training began. This training was not only limited to cleaning the beach. He also went on a muscle building diet in addition to training whenever he could. When he had time, Izuku also trained with his Flamemon form, discovering several special attacks. Apparently, the attacks are imprinted in the Digimon's digital memory, thanks to this Izuku didn't have much difficulty mastering them. Even the techniques came with their own names.

The first was the one he used to beat the sludge villain. For some reason that technique was called "Baby Salamander".

The next technique is to simply attack with his tail wrapped in fire. That technique was named Flame Tail.

The next attack was to charge at the opponent while Flamemon was engulfed in fire. It's called Noble Heart

Lastly, it was being able to throw a simple but effective fireball. It's called Flame Toss.

And so, in the blink of an eye the ten months of training was over.

- "24 hours left for the entrance exam. Luckily, I managed to finish cleaning everything with a day to spare to rest. I wonder what the exam will be about. Of course, there will be a theoretical part and most likely there will also be a practice. I hope the practice is not so difficult. Although I shouldn't worry, with Flamemon it should be enough to pass..." – He started muttering.

- "Kid?... Kid!... KID!"- A scream brought Izuku out of his thoughts, when he saw the one who had yelled at him, he was surprised to see a rather weak-looking man. The person is a very skinny man with sharp, angular features and long limbs, his neck long and his eyebrows absent. He possesses a large scar that covers most of the left side of his chest, and it is not uncommon for him to spout blood from his mouth when excited or surprised. – "What are you doing on top of the garbage?"- The man asked.

- "Oh. I think I got lost in my thoughts. I just finished cleaning the beach."- Izuku said as he climbed down from the trash pile.

- "You were the one who cleaned the beach?"- Asked the man.

- "Yes, in part it was to be able to train for the UA entrance exam. On the other hand, it was also to help the community."- Izuku said as he put his shirt back on.

- "I see. You did a good deed boy."-

- "Thanks… um?"-

- "Yagi, Toshinori Yagi."-

- "Nice to meet you Yagi-san. If you'll excuse me, I have to go home to rest."- After saying this, Izuku leaves to his house.

- "Ten months ago, this place was a mess. That boy cleaned all that in just ten months. Awesome."- The man thought and then gave a big smile. – "He could be a good candidate."-

To be continued.

Author notes.

So yeah. Here we are.

I hope you like this first chapter.

So, what do you think? It is good? Bad? Should I kill myself?

As I mentioned at the beginning, I'm using Digimon Frontier material for this crossover.

Nothing more to say I hope you like it.

Being the first chapter, I ask you to please comment on your suggestions for this story.

So yeah. That's all for now.

Bye Bye.