Izumi Midoriya was considered an adorable child since she was born.

She always had an air of innocence in her eyes and an attitude to match.

She would become even more endearing when her quirk came it.

It was a week since Katsuki Bakugou got his quirk Explosion, and Izumi was just minding her own business on the swings when she saw Katsuki and two other boys bullying a kid who had a minor plant quirk.

"Kacchan, what are you doing?!" She said getting in front of the bullied kid.

"Eh? He didn't want to let us have the ball, so I have to show him who's boss!" Katsuki snarled.

Izumi stiffened as Katsuki charged forward and she thrust out her hands when....

Stars came out and knocked the boys back.

"Huh?!"

"Stars came out of her hands?!"

"Her quirk...her quirk...wait....are those ears?!" The long fingers boy asked.

Izumi felt her head and her human ears were gone, they were replaced with long pointed ears with dark brown interiors. Behind her, right at her hips, was a bushy tail with a cream colored tip in a flower pattern, and she also had a large furry collar that is also cream-colored.

Izumi couldn't believe it. She had a quirk!

------------
After showing her mom, they were now at the quirk doctor.

"Now this is beyond expectations. It seems you have a special hybrid quirk. A combination of Emitter, Mutant, Transformation, and Accumulation. The first I've, or really, anyone has ever seen!" The female doctor said.

"What?! Really? How?" Inko asked.

"Well, if I recall you are a fourth generation user of a mild telekinetic quirk and your husband was a sixth generation fire breather right? Did some family members on either side have a mutant quirk or something?"

"Well, my great-grandmother had a fox quirk, and one of my husband's relatives had a Hydro-electric quirk."

"Those may have factored in, but I also found something in Izumi's DNA. Her genetic code seems to be unstable, not in a bad way, and it seems to be influenced by the environment. For now, I would like to have monthly visits until we get a better understanding of her quirk before we give it a proper name." The doctor said.

Izumi's new tail wagged in excitement as she gained a very unique quirk.

----------
Izumi liked that she gained a quirk but now she was overwhelmed as she became the new center of attention.

"Wow, you look fluffier!"

"Is that tail real?"

Katsuki scoffed as Izumi looked nervous. No matter. Her quirk is still not as good as his.

--------
Izumi had been researching what she could do as she was with Bakugou and his little followers. Eventually they got to a stream and something caught Izumi's eye.

Katsuki noticed Izumi went to the shallow river to pick it up.

"What are you doing Deku?" He asked.

"I think I found something." She said as she grabbed it.

It looked to be a stone, a deep blue with what looked to be bubbles inside it.

'Wow...' she gazed at it.

Katsuki was about to say it was just a stupid stone, when it glowed and she felt a surge of power from it.

Her ears changed into webbed ones, her tail became more fish-like, and her hair became an Aqua blue. A white fin now encircled around her neck, and a third fin appeared on her head like a dorsal fin.

Izumi couldn't believe it! It was like she evolved or something!

Katsuki's lackies couldn't believe their eyes either.

"Did Midoriya change somehow?!"

"Was it the stone?"

"Is it permanent?"

Katsuki was about to yell when Izumi suddenly tried her tail when it suddenly glowed blue and water from a wave hit the water causing ripples.

Izumi was stunned. She used a water quirk!
----------
About nine years passed since then.

Izumi had also found other stones which affected her and expanded her capabilities as well.

They include the Water Stone, Fire Stone, Thunder Stone, Leaf Stone, Ice Stone, Moon Stone, Shiny Stone, and Sun Stone.

She also kept notes on her nine forms which she discovered over the years and had the stones put into two special bracelets for her. Four stones in each.

She wound up needed a full notebook for each of her forms.

Over the years, her hair gained brown highlights to match her ears and tail, which would change color depending on her transformation.

She also took up an interest in dance class so she would study various dances. Favorites include latin, sensu, ballroom, veil dance, pop, jazz, swing and freestyle.
--------------
At class...

After roll call, the teacher started their class agenda, "Since you're all third years it's time for you to think seriously about your future. I'll pass out hand-outs for your future plans now, but..." The teacher pauses and roughly grabs the papers he set on the desk; while the students start activating their quirks.

"... You're all..." With a huge grin turns around and throws the papers out and happily announce, "... pretty much planning to go into the hero course, right?"

As the teacher says this students started showing off their quirks with a jubilant cry. While Bakugou once more had his feet on the table, Izumi had a small smile painted on her face. "Yes, yes, you all have wonderful quirks! But using your powers at school is against the rules!" The teacher cheerfully admonishes the class.

Of course, Bakugou speaks up, "Teach! Don't lump us all in the same group. I'm not gonna be stuck at the bottom with the rest of these rejects!"

Izumi rolled her eyes at his claim.

Bakugou continued in belittling their classmates even as Izumi ignored them, "You all should shut up like the extras you are!"

The teacher made a considering noise and read from his notes. "Oh, if I remember correctly, you and Midoriya want to go to U.A. High, right, Bakugou?" Everyone started reacting with how U.A. was known for the almost impossible acceptance rate. Though some began whispering that Izumi was a shoo-in.

Bakugou had to refrain from bursting in anger though. Izumi was the only one who could beat him in a fight ever since she started experimenting with her powers.

Though she preferred not to be in the spotlight too much, she'd rather be in the underground to find the real dangerous villains. Heck one of her forms was perfect for it! Plus with her uncanny cuteness, she could bring villains to drop their guard until it is too late.
-----------
Later, Izumi was on her way home though a tunnel on the way, when she heard a sludge-like sound.

"I never thought that such a cute face with a cute quirk would exist. Maybe I'll have some fun with you before I take over your body, my pet." A voice oozed out.

Izumi turned to see a sludge villain coming out with a perverted look on his face, as she felt him undressing her with his eyes.

"I don't think I'm suitable for your needs since I'm still young, so no thank you." She said backing away, ready to set an attack.

The sludge villain launched at her, but she used one of her special moves:

"Freezy Frost!" And thus freezing the sludge villain in a block of ice.

Izumi rushed home to be safe.

Though halfway she ran into a certain prohero.

It was Midnight.

"Quite an attack back there sweetie."

"Eh? You saw it?"

"Course, but quite unexpected as you don't look like an ice quirk user."

"My quirk is really complicated. It has many facets to it."

Midnight smiled. She may have found a new protégé.

Meanwhile All Might caught the Sludge Villain, but did not know who froze it.

--------------
In a gym location...

"So you want me to test my limits?" Izumi asked.

"Yes, for now explain your quirk."

"I call it Genetic Adaptability. I'm currently in my default form, but when I touch one of the stones on my bracelets, I can become one of my other eight forms. Water, Electric, Fire, Ice, Grass, and the last three, I just decided to call my psychic, dark and fairy forms. They have their own powers too. The time limit on them varies. Depending on my strength and energy I saved up, I can be in the form for almost 12 hours. But if I go over my limit I turn into an animal version of my default form for the rest of the day. But I can still use my default powers, although my clothes don't change with me..." Izumi said embarrassed.

Midnight nodded. "Alright. Aside from default, what's your best transformation?"

Izumi turned to her Leaf Stone as her ears and tail became more leaf-like and her hair looked bright green.

"My second best is my water form, but I like this as well as I can use a move I call Nature Power. It's like my default Secret Power, but stronger. It turns into a different move depending on the current battle terrain.

Buildings or paved terrain is Tri-Attack
Grass, flowers and wood is Energy Ball
Rocky, Earth Power
Caves, Power Gem
Electric, Thunderbolt
Misty, Moonblast
Snow is Ice Beam
Oceans or lakes, Hydro Pump
Bridges or high buildings, Air Slash
Volcanic or Fire, Lava Plume
Muddy areas or puddles, Mud Shot
Ruins, Draco Meteor
Sand or Rubble, Earthquake
Psy terrain, Psychic."

Midnight was impressed. Her quirk had a lot of potential.

"Alright, and your shortest?"

"That would be my Fairy Form. I just found the stone for it a year ago." Izumi said touching the Shiny Stone, and changed.

Her collar became Ribbons with one in her hair, as her ears and tail became pink and she gained pink highlights.

"My Ribbons act as feelers, they can sense emotions, and even erase hostility. They are also useful for long range attacks and taking down opponents."

'Almost like Eraserhead, but more cute.' Midnight cooed to herself.

Yup, Izumi was gonna go far.
-------------
Nine months later.....

After all the training with Midnight, Izumi was ready to enter the U.A. Entrance Exam.

After going through the test, which was really easy. Now she was waiting for the Physical Exam.

Aside from fangirling about Present Mic, Izumi was nervous on how she'll do in the exam.

She was in a sleeveless brown hoodie with black metallic shorts, as her tail wagged in anticipation. She also wore a collar with a special tag.

"Oh, you nervous too?" A voice came up.

It was a brown haired girl with round cheeks smiling.

"Yeah, you too?"

"Yeah, but let's do our best." She smiled.

Then Izumi heard that the gates were about to open. Getting ready, she used a Quick Attack to get a head start.

Present Mic saw her move and smile. "So that's the one Midnight wanted to recommend. She has potential." It's true, Midnight wanted to recommend Izumi but the girl wanted to prove herself, rather than take the easy way.

As Present Mic told the students there's no countdown, Izumi had found 3 2-Pointers, and a 3-pointer.

Smiling, Izumi Tapped into her Water Stone for her Aqua Form.

Her hoodie became Aqua blue, and her shorts became yellow.

"Aqua Tail followed by Ice Beam!"

Striking them down, she turned back and ran for more.

------------
The teachers were watching with interest.

"A good crop of hero hopefuls this year. Those who can analyze the situation." Snipe said watching a boy with tentacles.

"Those who won't be late to the party." Hound Dog said watching a Iida child.

"Who can adapt to any situation." Recovery Girl said watching a girl make combat poles to fight.

"And there are the heavy hitters." Vlad said seeing Bakugou and Kirishima with their quirks. Especially with Kirishima's mutation.

"Of course there are the wild cards too. Those who are unpredictable." Midnight said seeing Midoriya, changing her forms for the situation.

"Yeah, I noticed she's got a rare hybrid quirk. She's the one you wanted to recommend?" Ectoplasm asked.

"Yeah, but she wanted to get in on her own merit. Her quirk is Genetic Adaptability, when she uses the stones on her bracelets she can transform her abilities for different situations. I can tell she'll go far." Midnight said proudly as Izumi took down more robots.

Then Izumi stopped as she spotted one entree, Aoyama on the ground in pain, and to their surprise, she rushed to his help and healing him with a bell move.

She did the same with other examinees.

Nezu smiled as a glint appeared in his eyes.

"I think it's time we give them a real test." Nezu said as he pushed a button.
---------
Izumi paused as she helped the 20th person in the exam.

"Okay, I helped 20 people, that should get attention. I also took out 17 1-pointers, 9 2-pointers, and 15 3-pointers. That adds up to 80 points. Hope that will be enough." She said before a big rumble came up.

She turned to a large robotic spider thing.

"That's the Zero Pointer?!"

"It's too big!"

"Aw man, my quirk is useless against it!" Some students yelled as they ran scared.

But Izumi spotted the brown haired girl under some rubble crying for help.

Izumi ran with a Quick Attack and jumped with a Bouncy Bubble.

Then she did a gesture for a dance as she touched her Sun Stone, going into her Psychic Form. Her ears became more cat like, she gained a Ruby in her forehead, her tail slimmed and the fur and her hair became a light purple.

"Psychic Terrain!" She said as the area gained a pinkish purple glow.
" Psyshock!" She yelled as an odd psychic wave struck the Zero Pointer with a crushing purple beam, making it go up in the air, before breaking apart into smaller parts, that got crushed into powder.

Izumi exhausted by everything, fell and found herself caught by something.

Oh, yeah, she used up her power and she's now in her animal form. She was caught by the engine legs boy.

"Whoa! You turned into an animal! How is that?!" The brown haired girl asked.

Izumi pointed at her collar and Iida looked and seemed to understand and pressed the button. A recording played.

"Hello, I'm Izumi. If you see me in this animal form don't worry, it's what happens when I use up my energy. I become like this for the rest of the day to recharge. Oh, and can you please gather up my clothes? They don't change with me. Thank you."

The girl spotted the clothes nearby and gathered them up.
--------
A week passed since Izumi took the exam and was now waiting for the letter.

"Izumi! The acceptance letter is here!" Her mom said.

Nervous, Izumi opened it, and a hologram emerged.

"Hello! I could be a mouse, dog or bear, but you can call me Principal Nezu! Miss Midoriya, for Written test, I am happy to say you passed with flying colors, an exceptional 110%. Now for the practical exam, we were very impressed with your performance of taking down the Robots, a total of 80 points! But that was not all we were looking for. We also saw that you went out of your way to help fellow examinees with exceptional healing, 20 total. As we also have Rescue Points, we decided to give you: 80 Rescue Points for helping them!

But there is more! While the other examinees ran from the Zero Pointer, you took it down to save another examinee!! I must say, that is the kind of attitude we want in our school!

For defeating the Zero Pointer:

An additional 140 Rescue Points!

So in total you have:

300 Rescue Points, surpassing the reigning score of All Might who had 100 points!

We welcome you to your Hero Academia!" Nezu smiled as the rankings revealed Izumi was in the top in the Entrance Exam.

Izumi cheered as her mom cried in happiness.
----------

Katsuki grit his teeth when he saw that he came in FRIGGEN SECOND PLACE!