There's not really a plot to this one, at least not as of yet. Mostly this fic is a trial run of various concepts and ideas that I have of the MHA world. So I would like feedback on future updates to see if a full story on them would be good.

He was called to the development studio and told to wear his hero suit at the end of the school day by Nezu to assist in some type of project. Though he doesn't know how much he could help. He was getting used to managing about 30% of One for All and finally mastering Blackwhip that had manifested during the joint training with Class 1-B.

When he got to the studio, he noticed that it was pretty empty aside from the Hatsume working on some sort of small device while the principal was typing away on a laptop. With the elder noticing his presence as he walked in.

"Ah! Midoriya! Thank you for coming!"

"It's no problem sir, although I have no idea what you need me for."

The rodent-like creature couldn't help but smile and giggle in excitement.

"Hatsume here made something very unique, and it gained my interest so much that I had to personally had tocome down here to see it.", he held up a wristwatch that a screen in the middle with numerous dials on the side, "Tell me Midoriya, have you ever heard of the Multiverse Theory?"

Midoriya's blinked at the question as he thought of an answer. He heard of it, but it was mostly based on science-fiction movies. The idea that there are multiple universes aside from their own was not a foreign concept, but one that didn't hold a lot of merit in the scientific community based on the lack of evidence. But why bring up this topic now?

"Correct! I must say, you were definitely the right person for this job!", the principal beamed.

The green-haired teen was confused for a second before blushing in embarrassment, realizing that he was mumbling all of that out loud.

"The reason I bring this up is because Hatsume here was originally designing a mobile teleporter wristwatch that will allow a person to travel anywhere they want. Although when she went to test it on an object, it wasn't found anywhere on our planet."

Midoriya's gained a curious look as he made his way towards the two, "How did you find that out?"

Hatsume turned around as she continued tinkering at the contraption in her hands, "Originally, I had it connected to a satellite so I would know where it would pop up, but I haven't been able to get a signal."

Midoriya was still hesitant, but nonetheless intrigued, "That doesn't mean there's a multiverse though."

This was where Nezu started to pop back into the conversation, "You are right Midoriya. Which is why I had Hatsume hide a camera on an item as a test drive and look at what we found.", he chirped as he gestured Midoriya to look at the laptop in front of him.

When Midoriya looked into the screen he saw what appeared to be a camera that was inserted into a stuffed animal if the fuzzy texture surrounding the screen meant anything. Though he was certainly surprised at what he saw.

He saw various different versions of the world that he lived in, each with its own altercations and differences that made them stand out from his own.

One had technology that seemed to bypass his world's modern technology, with hover cars zipping across the skies at high speeds. Another seemed to be set in medieval times, with an armed knight being startled by the sudden appearance of the object that sounded suspiciously like Iida. The last one seemed to have an older version of Midoriya that wore glasses working at a desk job. With him pausing his work to look around after hearing a noise before the camera faded again.

Meanwhile, Midoriya was floored with the information gathered in this room. This completely changed the game when it came to interdimensional travel, though he still had no idea what he was doing here.

"This is all... very interesting sir, but I still don't know what I'm doing here."

"Well Midoriya, I wanted you to be the first person to test this device."

Midoriya looked between the two, trying to see any hint of a ruse or joke being made. Yet both of their faces displayed none as Nezu continued to smile at him while Hatsume tinkered on the watch.

"W-WHAT!? WHY ME?! S-Shouldn't this go to a scientist or something?!"

Nezu sighed regretfully as he put the laptop down and gained his attention, "You would be right Midoriya, but as of right now I don't trust anyone other than myself with this information."

Midoriya paused in his panic as he took in the words of the hyper-intelligent being.

"Normally, I would entrust someone on I-Island to study and perform tests on this, but my trust in their security is not really optimistic right now to say the least. And I don't want this type of equipment falling into the wrong hands."

The boy grimaced at the reminder of his time there. When the whole island became a hostage situation over the works of David Shield. If even Nezu didn't trust the most technologically advanced place to guard this secret, then he must really be at the end of his rope.

"You are not forced to do this Midoriya.", the headmaster wanted to this point across before he went on to describe the details, "All I want you to do is go to another world, roam a bit for an hour, and then we will bring you right back. After we see what it is capable of, I will decide what to do with this device."

Midoriya thought about it, and if he was being honest to himself, he was scared. Going to a whole new world on his own was a daunting prospect for him. Yet, Nezu was asking for him to help. He couldn't ignore his request when he needed assistance. And besides, it was only for an hour, right?

"I'll do it.", the green-haired teen gave a determined look on his face as he stepped up to the challenge.

Nezu couldn't help but smile at the firm resolution that accompanied the young boy's face as he stepped forward. He was glad that All Might was able to find such a good candidate to be his successor.

"Splendid! Go over to Hatsume as I input the final coding for the watch.", the principal chirped as he grabbed the laptop and resumed typing.

While Midoriya was glad to help, he couldn't but worry a bit as stood next to the eccentric inventor, watching her as she continued to fiddle with the contraption that he assumed was going to go on his wrist.

"Are you sure about this Hatsume?"

"Absolutely sure! Why, Nezu even approved of it!"

"Right..."

Surprisingly, that didn't make Midoriya feel a whole lot better. But they did say it was only an hour of roaming around in his time.

"Don't worry Midoriya, I notified Shouta about your assistance with me. So you won't get in trouble when you get back.", the principal reassured him.

Of course, the Principal might've left out the fact that the assistance required interdimensional travel. But it should be fine. After all, it's only for an hour.

He put on the watch above his wrist so that it wouldn't interfere with the gauntlets that were on his gloves. He made any final adjustments on his suit before nodding at the two to continue. With the confirmation given, Nezu rapidly typed a command on his laptop that made the watch on his arm pinpoint a series of coordinates that was lost on the teen.

The principal noticed his confused expression before explaining, "This is only a trial run, so I am only going to let you roam in this new world for about an hour before I bring you back. If you don't have any questions, press the dial on the watch please."

Midoriya took a look at the two who were looking at him with an excited, but a slightly worried expression. The greenette took a deep breath before pressing the button, shutting his eyes and bracing himself for whatever may come next. He became disoriented as numerous lights and flashes danced around his body, before he seemingly popped out of existence in the classroom.

…

He groaned as a scorching light was suddenly on his face before a figure stood over him blocking the sun from his eyes. After gaining his bearings, he took in the appearance of the man in front of him and gaped his mouth open in shock.

It was a slightly older version of him staring down at him with a wide smile. Though the face was just about where the similarities end, as he was wearing a crisp brown cowboy hat had, a western buttoned-up shirt, and a shiny badge near his chest that said 'Sheriff'.

"Well Howdy! Welcome to Mustafa!"

Next up, MHA if it were a Western.