A/N (1/11/18): Ok, I know a MHA and UT crossover sounds really weird (or maybe you like the fact that I'm smashing them together, who knows?), but I plan on making this more that just "Oh it's Undertale but with MHA characters! Whee! let's go!" (idc if you do this, but I don't want to write that).

I don't plan on including everyone from 1-A 'n stuff because I have a hard enough time keeping track of all 5 of my ocs. Sorry bud.

This is set between Stain's defeat and the finals for reference.

And, of course, I don't own My Hero Academia or Undertale, any characters, etc. Blah blah you know I don't own this, it's . Go somewhere else if you want 100% original stories.

Hope you enjoy!

Midoriya scared himself awake when he sneezed, sending a cloud of pollen into the air. The sun shone down in his eyes through a large hole in the ceiling, creating a soft, golden glow from the flowers he rested in.

What? What's happening? Panic rose in his throat as he sat up, the cave walls and flowers unfamiliar to him. Where am I?!

C'mon Izuku, remember something! Anything! He pounded his head, hoping it'd somehow arouse his mind. He remembered walking home from the train station, he could see his apartment complex before he felt a cold hand on his shoulder. A shiver ran up his spine like a beetle.

"Hello?!" Midoriya cried out, brushing petals off his uniform as he stood up. Nothing but his echo replied. He looked up with the sliver of hope someone outside heard his cry.

I might be able to reach that with One for All, Midoriya realized. He squatted down, charging up the quirk in his calves. Egg in a microwave. . . egg in a microwave. . . He launched up into the air, greedily reaching up as the hole grew closer. He barely reached halfway before falling back to Earth like Icarus. Fortunately, his legs didn't break at the launch and the flowers cushioned his landing.

I can't use 100%, I'd be dead in the water, Midoriya sighed in defeat, What could he do at the top with a pair of broken legs? There must be another way outta here...

A passageway caught his attention. How did I miss that?! Midoriya slapped his cheeks, apparently he didn't get enough sleep or something.

Midoriya wasted no time following the passage, finding a strange, stone doorway at the end. The top of the arch had a strange symbol carved into it, depicting a winged circle over 3, smaller triangles, the middle one was upside down. Although it looked pretty neat, Midoriya gave a small "Huh," and walked into the doorway.

It lead into another cave, a patch of sunshine peeking in and sustained a small patch of grass in the middle. Midoriya approached it, not planning on checking it out, until a flower burst out of the earth.

"Howdy!" It spoke, Midoriya instinctively yelping as he jumped back. The flower, which somehow had a face on it, gave him one of those looks where you're concerned about what just happened but are too afraid to bring anything up so you just keep awkwardly smiling in silence.

"I'm Flowey! Flowey the Flower!" The plant, Flowey, broke the silence. "Hmmm... you're new to the Underground, aren'tcha?" It spoke to Midoriya in one of those weird, exaggerated voices you only use for little kids and sometimes pets.

"The... what?"

"Golly, you must be so confused," It giggled. "Someone ought to teach you how things work around here! I guess little old me will have to do."

"Actua-"

"Ready? Here we go!"

A dark blue, glowing heart bursted out of Midoriya's chest. He quickly patted his chest, in case that actually ripped a hole in him. Although he felt no holes, he almost expected his heart to jump out with the blue one.

"See that heart?" The flower continued, unphased by the event. "That is your soul! The very culmination of your being! Your soul starts out weak, but can grow strong if you gain a lot of LV!"

Am I sick? What kind of fever dream is this? Midoriya placed a hand on his forehead.

"What's LV stand for? Why, LOVE, of course!" It explained. "You want some LOVE, don't you?"

"Um-"

"Don't worry, I'll share some with you!" The plant didn't wait for a reply. With a wink, he stuck his tongue as spinning pods floated out from behind him.

This doesn't look goo-

"Down here, LOVE is shared through..." It stalled for a moment. "Little white... 'friendliness pellets.'"

Midoriya walked back, but bumped into an invisible wall. I can't get out!

"Move around! Catch as many as you can!" The plant prompted as the "friendliness pellets" moved towards him. He took two, stiff steps to the side and allowed them to pass.

"Hey buddy, you missed them," Its baby voice faltered, its smile strained as he glared at Midoriya. "Let's try again, okay?" It summoned the pellets again, sending them after him like hunting dogs.

"No!" Midoriya protested, dodging them again.

"Is this a joke? Are you braindead?" The flower gritted his teeth, it's smile gone. "RUN. INTO. THE. BULLE- friendliness pellets." He covered his mistake with a cough.

A sharp pain resonated through Midoriya's body when a bullet hit his soul, forcing him to his knees as he clutched his shirt. The glow of his soul flickered, it's light fading.

"You idiot," Flowey spat. "In this world, it's kill or BE killed! Why would ANYONE pass up and opportunity like this?!" It summoned a wall of bullets around Midoriya.

Midoriya flipped over, scurrying away from the closing walls. He frantically searched around for anyone, or anything to help him, but nobody came.

"DIE."

A/N (1/11/18): Hi it's me again, did you miss me?

As of writing this note, I thought of the idea technically yesterday, since it's almost 1am for me. I do have a general idea of the plot though, so hopefully it'll be consistent. Who knows? Maybe I'll come back and rewrite some stuff.

I also have no experience with putting stories up on here so I'll do my best to fix anything I mess up.

Oh and you bet your sweet little butt I'm gonna write more. This is just the beginning bby.

Literally, the title says Chapter 1. I know you can read.

K see you later bai