It was a normal day in the U.A. dorm and most of the young female heroes were handing out in the dorm’s common room when Mina Ashido walked in. “Hey guys! You’ll never believe what I bought.” She said, bubbly as ever.

“What is it, ribbit?”  Tsuyu Asui asked.

“It’s an Oni costume!” She said pulling it out of the bag. It had a tiger stripped skirt and a top made of bandages, made to cover the wearers breasts.

“So, you could get that at any costume store, it’s cute though.” Ochako Uraraka said.

“No, that’s just the tip of it.” Mina said. “Let’s go to my room so I can show you.”

“Why not here?” Momo Yaoyorozu asked.

“Because I need to change into it to show it’s cool thing. I don’t want the boys getting a peak.” Mina said with a grin.

The four of them went up into the pink girl’s pink room. “So the cool thing about this costume is that it will change you into character of the costume. In this case, it would make me an Oni.” Mina said taking it off the hangers it came with.

Tsuyu was the first to speak up. “That sounds a little far fetched, ribbit.” She said.

“Yes. I don’t believe that’s how costumes work.” Momo joined in.

Mina stared in disbelief. “Really? It’s unbelievable? May I remind you that in this room, there is a girl who is a frog, one who can create anything, one who can defy the laws of gravity, and I can make acid shoot out form my body.” She said.

“Yeah, but a costume that can change people doesn’t make sense, now if you had told me that someone has a quirk that would do that I could believe.” Ochako said.

Mina huffed, “That was her quirk. The shop owner can make these costumes and imbue them with transformation power. Fine, I’ll show you.” She said stripping down and putting on the costume. The first thing they noticed was the the costume was a bit larger then Mina’s normal outfit size.

When Mina finished putting on the loose outfit, it began to glow. Mina’s body began to change as the glow began. Her arms start pumping up with more muscle the the three girls in front of her had combined. She got taller and stronger, her abs, which were there but not too apparent, chiseled it’s way onto her stomach. Her leg muscles increased as her thighs, hips, and ass got a little bigger as well. Her bust got a little bigger as well before the final change became apparent. Her antennas started getting bigger and sharpened to a tip, giving her yellow horns.

The three doubters stared in awe as the once 5’3 girl now stood at six feet tall. Momo jumped up to inspect the insect girl. “I’ve never seen anything like this!” She said with excitement, feeling Mina’s new muscles.

“Yeah, it’s awesome! I feel so powerful in this. It’s also made to order, she makes it for you when you come in. You can get what you want when you go back but she told me that when ever someone comes in for the first time, she gives them something that really fits them.” Mina explained.

“I guess you do kinda look like an Oni with that pink skin, ribbit.” Tsuyu said.

“Mind if you show us where this store is?” Ochako asked.

“Of course!” Mina replied.