[Note: I got the transformation from the Dandadan anime, as it would be interesting to see it in the My Hero Academia universe.]

Ever since you discovered your quirk at age 4, everything became complicated for you. The people around you hated you for your power, with looks of disgust and rejection piercing your chest every time you tried to smile. That's why you learned to hide who you were, to not use your quirk, to not draw attention to yourself so no one would hate you.

When you were accepted to U.A., you thought the burden would disappear, that you could finally live like a normal person, but you were wrong. On your first day, Professor Aizawa made it clear that everyone had to show their worth, and that meant using their gifts. You tried to endure, to do your best without showing your true power, until the ball-tossing test arrived. There, you realized that if you didn't give your all, you would be expelled immediately. You had no choice.

The air grew heavy as your body began to change. Your human form cracked like a shell, and from it emerged something you had feared to reveal your entire life. Your skin turned pale and dark, almost grayish, your hands lengthened and deformed, ending in bony, sharp fingers. Your face stretched into a disturbing grimace, your eyes glowing brightly, an artificial mouth placed over your mouth like a mask displaying sharp teeth that should never belong to a human. On your head, your hair burned like a wildfire, white in the center and outlined by red edges, rising furiously toward the sky. A reddish spectral energy ran down your back, enveloping you like a cursed aura. Although your attitude is lethargic and melancholic.

Thus, you became what you had always believed to be a monster.

With a roar that didn't seem human, you threw the ball with all your might. The ball shot out like a projectile and flew beyond the U.A. grounds, disappearing into the horizon. The silence that followed was as heavy as your labored breathing. When you returned to your normal form, fear gripped you: you didn't dare look at anyone, certain that you would only find rejection in their eyes.

But what you saw was different. There was no hatred. Only amazement. Your classmates were shocked by your strength, and even Aizawa, who always seemed indifferent, let a glimmer of interest escape his gaze. That reaction calmed you more than you imagined. No one judged you, no one pointed at you, and for the first time, you didn't feel like a monster.

After three months, you'd achieved the unthinkable: everyone became your friends, even Bakugo, though he'd never admit it out loud.

Now you run alongside them through the city streets, the echo of sirens and screams resounding around you. A villain had managed to sneak into the practice area: Muscular, the brutal assassin with his skin covered in red fibers that made him nearly impenetrable. Your teammates were ready to fight, but your mind kept repeating the same warning: you could only transform twice in a short period of time. If you used up your power too soon, you could be left defenseless at the worst possible moment. When they arrived at the place, Muscular was about to kill some civilians, but when he saw us, he moved away from the civilians and focused on us, everyone prepared their quirks while you got into a fighting stance, ready to fight and although you weren't using your quirk now like the others, you knew they wouldn't leave you behind, so you were ready.