Tensura X MHA {{Fanfiction Crossover}}

Goal

Note: One for All and All For One will be slightly different from the original series. As Rimuru cannot be harmed using physical damage. The two Quirks will be boosted/given a factor that lets them deal damage to the likes of Rimuru, a spiritual being. For example, the enhancement [Severance] that lets Rimuru kill a *demon* is shown in the manga. Demons are spiritual beings.

***

"Uwahh, I think I overdid it back there."

Approximately 10 minutes ago, I encountered this sludge-type villain. The villain was strangling a boy, probably trying to take over his body and kill him.

I hero-ed out and tried to act all mysterious wanting to help. Of course, seeing someone about to die rubs me the wrong way. Well... I'm not one to talk.

Ciel has been analyzing why we were sent here. Much to my surprise, she already has most of the info I've wanted to hear.

<<Master was sent here to accomplish a certain goal.>>

What goal are we talking about here?

<<Bear with me Master, as this will get a little bit confusing. Master, you were sent here to fulfill the purpose of this world.>>

Okay, that just went over my head for a second. Excuse me what!?

<<Think of it as a story Master, one that you need to go through and complete. This world is about to enter the beginning of its end.>>

Uhm, I still don't get it! But I got your point, so I just need to interfere with this world's fate?

<<That presumption is correct. I'd suggest you enroll in this school named U.A. High.>>

So it's back to school? Well, this UA school seems highly different than your average high school. The kids there would have superpowers, and they're trained to become heroes.

Also, if I want to interfere with this world's fate, it only seems normal to become an influential character. Alright, becoming a top pro hero is now my goal.

While I was busily dawdling with my thoughts, I heard an explosion in the direction people were gathering in.

"Excuse me, what's going on?"

Alarmed, I ask one of the bystanders who seemed to be aware of the situation.

"This sludge villain caught a kid and dragged it here in an alleyway, pro's arrived but their quirks can't do anything against it."

"I see, has it been long?"

"No, it's been 8 minutes since this started. Come to think of it, wasn't All Might chasing this Villain?"

Uh, I don't know! I was just passing by, I didn't see anyone.

"Yeah, now that I remember as well."

Oh good, seems like I wasn't the only one he was talking to.

As I thought that, the same green-haired kid appeared in my field of vision. What is he doing here?— I thought when he suddenly went into a running stance.

Eh? Is he gonna go in and save that kid?

<<That boy has no quirk Master, if he does go in, at worst he'll be injured before the heroes come and drag him out.>>

Ehhh? That's bad, gotta stop him before he kills himself!

<<There's no need Master.>>

What? What do you mean 'no need'?

<<All Might, the symbol of peace is nearby.>>