"Oh man, is it good to be back to normal again," Midoriya cheered as he walked into homeroom on a chilly August morning. Izuku took his seat and then marked his name off the board. The only names remaining were Shoji, Sato and Mineta.

"I got 3 snack packs on Sato," Kaminari announced.

"No way it's going to be Shoji and I'll raise you two king sized snickers." Momo held up a couple of wrapped chocolates.

As the students in the class began placing bets on their class mates, now with so few left the spot gets split among many people now, so it forms as sort of a potluck more than anything. Izuku pondered on what led to this strange incident.

"Mitsuki-chan," Izuku quickly hissed when he saw his secret paramour walk right into class one morning, dressed in Bakugo's school uniform which was stretched to bursting against her large assets. "What are you doing here? We can't be seen together, Kaachan will flip if he finds out."

"Oi, Deku, if I find out what? And since when are you are first name basis with my mother," Katsuki snarled as the woman who Izuku believed to be the mother of his old bully turned out to somehow be a gender-swapped version of said bully.

"Kaa-Kaa-KAACHAN!" Izuku shrieked as he struggled to break free of the deathly grip on his collar.

"Dude what, no way," Kirishima shouted as he vaulted over rows of desks to land hard next to his bro. "How are you, were you always a chick?"

"Fucking shitty hair of course not. Some jerks on the late train were fighting and I got hit by their quirks, apparently it just changed my gender, they said it would last a day though," Bakugo yelled so everyone in the classroom could hear him explain. "That was after I kicked both of their asses for dragging me into fight."

"So for today only," Mineta slurped. "You have all the goodies that a lady has?"

Bakugo a teenager with a reputation of 'doesn't afraid of anything', slowly backed away from the lustful gaze of the Purple Pervert, something that hadn't been directed at him before. "If you try and touch me, there won't be enough of you left to bury."

Aizawa walked in a moment later, took a look at one of his students, "Bakugo, go to the nurse, if she clears you then you can come back."

It wasn't until the next day when Bakugo walked in as he normally was that Izuku remembered that there was a second quirk fired, a viral quirk, that spread amongst others in a chain. Jirou slowly and awkwardly walked into class and tapped Aizawa on the shoulder, "Um sir, I think I have a problem."

Mineta being the only person who would notice such minute differences immediately called out, "Jirou's tits shrunk! Ahahaha."

"SHUT THE FUCK UP!" she screeched at him. "Sorry but um it seems I might have been turned into a um, boy. Can I go home now?"

Aizawa looking back at Bakugo, "I didn't do nothing." Before look at Jirou.

"Bakugo, you go with her to the nurse's office, something went from you to her, and we need to find out what," the teacher ordered.

An hour later Jirou and Bakugo walked back into class, for some reason he was comforting her gently, they were trailed by the slow moving Recovery Girl, "Attention students, to my knowledge I have determined that when Bakugo was hit by the gender swapping quirk, he was also struck by a viral quirk which bonded and is now transferring itself around the classroom, it seems to have a short time of work, so you will only be affected for 24 hours and then it will pass itself onto someone else, and since you all were the first in contact with Bakugo," she mumbled something under her breath about lazy writers before continuing, "It will only stay within you twenty students, it doesn't affect your quirks so you are cleared to participate in normal school activities."

And thus the conversations started, eventually leading to someone making a bet that someone else would be next.

For a lot of students, it was just something to do, and for the others it allowed them to see what an alternate reality version of themselves would look like. Some of the students would even admit to taking the temporary bodies for a 'test drive' so to speak, and others talked about whether they were surprised or disappointed about some of the changes.

When it was Hagakure's turn, she admitted that she was disappointed that no one could see if she was hotter as a guy or not. Mina lamented that she looked too much like her older brother.

Momo was incredibly tightlipped about whether her breast size translated to any other part of her body, Todoroki in typical fashion was practically unphased though he came in with a sick braid that he simply stated, "My sister wanted to do my hair for once, so I let her; and my dad refused to look me in the eye so today's a pretty good day all in all."

When it came to Kirishima's turn he tried to join in on the heroics class but was sent away after he stepped out of the temporary changing room for whomever was affected at the time, and his bandoleer vest covering absolutely nothing of his new assets.

It was crazy during the next few days and a lot of people didn't feel the gender swap mattered all that much with All Might's retirement and them moving into the dorms. For Izuku that was a blessing because he had some alone time with a blonde mother who admitted she experimented in college and wouldn't mind retaking that exam.

But Izuku was one of the last, with three left, apparently even a few of the teachers threw in a small bag of candy on a bet here and there when they got told what was happening.

The door opened and Shoji and Sato walked in together, to the changrin of most of the class as that meant Mineta was the current swapped student. "Where is Mineta anyway?" Ojiro asked.

At that Midoriya began shivering, Todoroki who was standing next to him looked to make sure his quirk didn't activate for some reason. "Midoriya are you alright."

A tear welled in the green haired boys eye, "Mineta is next door to me, and he, so, many, noises. Unholy noises."

Author's Notes:

So I read a lot of what if this character was a girl or this character was a boy. And it's usually Izuku, Bakugo or Todoroki who get swapped, so I thought why not let every one get it.

Then I realized Mineta wouldn't leave his room and that's disgusting. I made it a 24 hour so you just have a day to see what it's like, some would take it in stride, others not really affected.

I also tossed in Izuku x Mitsuki because I just felt like doing one Milf story, since I don't have plans to do a proper one, there's plenty of the smutty stories already and that ain't my cup of tea for writing.

Just thought I'd put in my two cents on the whole Fem!Whoever stories.