Butterflies are harmless right?

Seeing their teammate running away by being chased behind a little toy tank, Izuku felt a little frustrated, because he thought it will be easier with his teammate and his analysis quirk of Mio, but she already knocked two of them out, and only Izuku and Ochako remained.

"Argh... what the hell just happened." looking at the corner of their eye, they saw Bakugo waking up from being thrown out, "Kacchan, are you alright?" As Izuku tried to help him up, only for him to scoffed at by Bakugo "I don't your help, you idiot."

Bakugou look around and said "Where the hell is the four eyes?" which he got a response from Ochako "Umm... he got chased by the tank, we have to hurry before his engine overheated and being captured by her."

"Tch... fine, let do this I wanna beat the crap out of her now." as he got up and ready to go in the building, follow by Izuku and Ochako. But little didn't they know, Mio has already observed them "Sure, just keep going and you be trap in my palm."

They went in the first floor of the building and was walking down the hallway together. Bakugo was in front and Uraraka and Izuku were following behind them.

'From what I know from her quirk is that she has super strength, a toy bomb, a zipper that can incapacitate someone and I think she has some sort of teleportation. What should I do? What can we do to finish the test?'

Suddenly, multiple bright golden color was coming from the end of the hallway and was coming towards them.

"Be careful, something is coming!"

Then hundreds of yellow colored butterflies were flying above them and were surrounding them like some sort of vortex. It seemed as if the butterflies were trying to surround them. Ochako then touched a butterfly and said. "Butterflies?"

"Kacchan quick use your quirk to blow them up!"

"I don't need you to tell me what to do! Go die in hell!!" Bakugo then tried to explode a chunk of the butterflies only to be thrown back like his explosion backfired. Ochako then cried out. "What?! Bakugo! He was suddenly blown away! Impossible!"

"Don't touch the butterflies! I think I get what happened."

Ochako then turned around and looked at Midoriya and saw his face that looked like he just achieved his long life goal. He walked up to the butterflies and pulled back his arm and formed a fist.

"What are you doing! Didn't you just see what happened to Bakugo?!"

Midoriya then looked back and said. "Don't worry, I think I figured out what is going on with these butterflies. At the start, the only thing it did is that it surrounded us but didn't attack us. And then when you tried to touch one of the butterfly it didn't attack you but when Kacchan used his explosion and tried to make an opening it hit him back instead of wiping out the butterflies. So I think it has the ability to transfer back the damage that you deal at them. Like this!"

Midoriya thrust his fist and struck at one of the butterfly only to be thrown back and hit the ground. But instead of having a pained face like one should when they are thrown on the ground, he instead had a shining smile on his face.

"I get it now so we should be good and not get attacked as long as we don't attack them first right?" Uraraka said it with a smiling face and putting a thumbs up towards Izuku. Midoriya then walked up to the tornado of butterflies and wasn't attacked at all and was passing through it like nothing happened.

"Yeah it should be ok now."

Back at the monitors, the class was looking at what happened.

"So that was what's going on, I was so surprised to see Bakugo flying back so suddenly." The one with the electric hair exclaimed.

"So that's the limit of her ability but I heard that she also has super strength and we all saw what that zipper thing did. So that should be the least of their concerns." The girl with a revealing costume said.

'I hope Mio will be able to not kill the students but she also is good at controlling her powers so it should be alright at the end of the day.' All Might was thinking of what just happened.

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Meanwhile, on the streets.

"When are they going to finish the test!" Ilda said while running as fast as he can from a toy tank that was constantly saying 'Kochi wo Miro!'.

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Back in the building, Ochako was rapidly slapping Bakugo's face gently (Like what All Might did to Izuku in episode 1 from MHA). Bakugo suddenly woke up.

"Arnghhh!! Why the hell are u hitting me for!!" Ochako then fell on her butt.

"She was trying to wake you up Kachan. We figured out what the butterflies do. They can transfer back the damage you do to them and receive none of what you do to them." Bakugo looked up only to see that he was in some sort of dome of butterflies.

"Tch, so we can only ignore these things and not hurt them." Bakugo then had a look of annoyance when he looked at these things.

"It seems like it. At least, we are going to be safe for now." When he finished his sentence the butterflies suddenly turned into rubble and was falling on them. Rocks and rubble completely surrounded them and was falling at a rapid speed.