Reincarnated as a Rimuru Tempest in MHA

First of all I would like to emphasize that since it is my first story there are errors but I would like you to help me with that and I will read it and change it now if the characters of Boku no Hero and Tensei Shitara Slime Datta Ken (or Tensura simply as you say it you) do not belong to me, only the story belongs to me, credits to their respective authors. In addition to the fact that on Wattpad it is in Spanish and more advanced. I'm going for chapter 9

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The night was dark and rainy, with the constant sound of cars passing quickly on the wet road. Alex, our protagonist, was walking alone on the side of the road, lost in thought. His personal problems weighed on his soul, and he didn't even notice the light of a car's headlights approaching quickly.

Suddenly, the sound of screeching brakes filled the air, and the vehicle barely managed to stop before slamming directly into Alex. Despite the braking, Alex was struck by the front bumper and thrown several meters into the air before falling to the ground, still conscious.

The rain continued to fall as the drivers who stopped ran towards him, worried. Alex, conscious but weakened, felt the cold of the rain on his face as the ambulance was called. Although he had suffered fatal injuries, they were not enough to kill him immediately.

Despite the shock and physical pain, as he lay on the wet ground, Alex's mind wandered. Between his thoughts and sighs, a strange concern made its way. "What a shame..." he murmured to himself, almost like an ironic lament in the middle of the rain.

As passersby and drivers tried to comfort him, Alex couldn't stop thinking about something that seemed trivial compared to his situation.

'I didn't manage to finish Rimuru's manga,' he thought with a wry smile. The irony of life, the fragility of its final moments, and the absurd preoccupation with a fictional story mixed in his mind.

Perhaps, amidst the pain and frustration, finding a glimmer of humor in this situation was Alex's last form of resistance before plunging into darkness.

<Confirmation Completed Memories of Subject Rimuru Tempest inserted into the new body>

"What is that?" He said weakly. "I must be going crazy because I'm about to die, I even hear voices in my head now."

Between the bursts of pain, the idea of ​​reincarnation crept into his mind. "If there is something beyond, I hope the reincarnation is real," he thought with some hope. Then, his mind became entangled in a peculiar desire.

(What if I could be reincarnated in the world of Boku no Hero Academia with Rimuru's abilities? It would be great to have such a versatile and powerful Quirk in addition to having a great sage in case of problems. Just with the idea of ​​a demon king in a world of heroes. That alone sounds incredible.)

A slight smile crossed Alex's face, perhaps as a way to momentarily escape reality. Between the rain and the murmurs of those around him, his mind wove dreams of worlds where heroes and fantastic powers offered an escape from the fragility of real life.

<Transmitting Rimuru Tempest Skills and Great Sage Skill to the new body as quirks>

<Error...Trying again...Error...Trying again...Error...The body would die from too many quirks. Changing Quirk for Magicules...success>

(Although I wish I could create things like normal Rimuru and demon king clothes)

<Creating Ephemeral Creation Skill>

"If I could choose which Rimuru I would be, I would choose the one who is already a demon king" He said to himself.

<Modifying Body, Adding more magicules to the body>

(Although I would also like to cure Izuku with the OFA issue since he damages himself, the full potions will come in handy, since they repair the body to 100%) "I feel very tired" He said to himself knowing that he will die there

<Creating Healing Essence Skill>

The protagonist closes his eyes to die but the voice speaks

<Finished Body>

<Sending soul to body created in selected world>

But then he notices how he can open his eyes and notices that he is lying on the ground and confused, he gets up.

"Ouch, what happened?"

<Answer You were reincarnated in the world you used to call Boku no Hero>

"Who are you?" He asked confused "And what quirk do I have?"

<I am the Great Sage ability and regarding quirk you have none> Depressing the protagonist <But you have the powers of subject known as Rimuru Tempest>

"Like" Confused and excited "But those powers are considered quirks?"

<Negative, those are not quirks due to the use of magiculas and I recommend you dress because a subject is approaching>

(But if they are not considered quirks that means that if Afo is interested in my supposed quirk he won't be able to steal it, right?) I ask with doubt.

<That's right, he won't be able to steal it because those are not human powers, but rather race abilities, and also the subject known as Afo lacks magicula, would you like use Ephemeral Creation skill create clothes?>

(Yes, I would like to create the clothes that Rimuru wears in the first season including Shizu's mask that reduces the amount of magiculas) *tries to turn into slime and succeeds* "I got it"

<successfully created clothing>

Alex in slime form would transform back into human form and would see that he now had the clothes.

"Incredible" He would say enthusiastically "Now let's see what our adventure is like. By the way, you don't have a name, right?"

<Negative, I respond to my master if he needs help by calling me as Great Sage but the is free call whatever name wants and will that>

"I see in that case I will put you..." He is interrupted

"Wow, what do we have here? Hey kid, haven't your parents told you that you shouldn't separate from them. Are you lost? Can I help you find your parents?" The villain said with a mocking smile.

(I see where this is going, let's forget the name for later, okay Great Sage? And can you be a little more human? It seems strange to me to have a robotic voice in my head that sounds too much like a robot. Although everything seems strange to me, the fact that reincarnating in an anime world is already strange and on top of that like Rimuru Tempest) He thought/Proposed to his great wise man

<Okay, I'll be more human and it would best to leave the name thing for later>

(One last thing, why did he call me boy?) He thought confused with a drop of sweat.

<Well, 4 because you are at the moment in story when protagonists years old, therefore> Being Interrupted

(I'm 4 years old) Receiving a yes and a reproach from the Great Sage (Hehe, now you seem more human now, what should I do with this villain?)

<Ignore him and if he wants to fight, use the sticky threads> Great Sage suggested.

"Hey brat, you've had me enough" Said the furious villain.

"mmh? I'm sorry, tell me what you want to do with me, villain? Kidnap me? Kill me? Because I won't let you do any of that" The protagonist said with a mocking smile at the end.

"And what are you going to do? Defeat me?" The villain said mockingly, receiving a yes with a nod from the protagonist. "Hahaha, don't make any more jokes. What is a 4-year-old brat going to do against someone who has experience killing and fighting in combat against heroes?" He said mockingly again.

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END Chapter 1