Yes

"...Sure, I need some more clothes for my clones anyway."

The 3 of you head to the mall and into one of the stores. On the way there you noticed the sky was finally looking better, there was actually sun out today.

You keep your guard up with Jiro, but you find that you're enjoying yourself. You're starting to see cracks in Momo's stiff personality and Jiro has been tolerable. You can't afford anything you're looking at right now so you're just hanging around while they pick up a bunch of items.

Throughout the day, Jiro has slowly pushed the conversations in more risqué directions. Even asking if any of us have been with another girl. You haven't gotten her alone to ask, but you're pretty sure Momo is as uncomfortable with the questions as you are.

Despite this you're still having a good time. You get distracted looking at the stores discount section when you hear Jiro and Momo behind you. "Here, I'll show you~."

You turn around to see Jiro and Momo entering a changing room together. "Just trust me, I'll help you get it on~." You hear Jiro say from inside the room.

Shit, your gut's telling you to go in there but you can't bring yourself to do it. If everything is fine you don't want to invade their privacy.

You stay nearby and continue looking at various items. After a couple minutes you hear something from the room.

It sounds like grunting... "Momo? Jiro? You okay?"

You don't hear an answer. Instead the noises continue. "I'm coming in!" You yell as you open the door.

What you see shocks you. Jiro has Momo tied up with her earphone jacks. You had no idea they could extend that far, she has her completely tied up!

Jiro giggles and rubs herself against Momo. Moaning with a blissful smile on her face. Momo has her mouth covered and is staring at you.

You rush to try and help her...

You stare at Momo and see her blushing. "Get off her!" You yell.

You rush Momo and rip Jiro's hand off her mouth. Momo moans as soon as her mouth is free. You grab her earphone jacks and yank on them, eventually getting them off Momo.

"Hey, what the fuck are you doing?! Can't we have some alone time?!" Jiro whines.

You glance at Jiro when she says this and see a purple glow in her eyes... It's the same color as those beasts, and that stuff on the rubble!

You look down at Momo and see that same purple color on her exposed breasts. "No! I knew something was up!" You stand in front of Momo and use your quirk to create 5 clones. Immediately due to the amount of bodies in the room, Jiro gets shoved out. You quickly shut and lock the door before recalling your clones.

"Momo are you alright?" You ask, looking her over.

"Mm~ yeah... I think so. I don't know what happened. Jiro was helping me try on clothes and then suddenly I felt amazing.

You look down and see her breasts are larger than before. "I'm not imagining that right? Is your chest bigger?"

She looks down and smiles. "Huh, I guess they are..." She stands up and fixes her clothes, her breasts stretching her shirt and causing her stomach to show a bit. "Where'd Jiro go?"

"I'm out here! Can I come back in?" Jiro says from the other side of the door.

You don't have time to explain... You need to get her out of here. You quickly open the door and activate your quirk again, this time focusing two clones in front of you. They materialize one after the other in front of eachother and launch Jiro away from you. You then grab Momo's arm and pull her along.

The two of you reach the front of the mall as your clones continue to hold off Jiro. You look around for somewhere to hide but decide leaving the mallcompletely is the best idea.

As you continue to drag Momo further from the mall she begins to get her bearings back with her and let's go of you.

"Kagami! What are you doing?! Where are we?" She yells.

"Momo I know you don't understand, but somethings seriously wrong with Jiro. I think she's infected with something, and she was trying to infect you!"

"What on earth are you talking about? We were just having some girl time..."

Your eyes go wide. You might be losing her. "Look at your chest! Why is it bigger if she wasn't doing anything!"

Momo looks down, you can see the gears turning in her head. "Oh... hmm... They are bigger."

"Just trust me Momo, stay away from Jiro!" You plead.

She looks at you with an uncertain face. "Okay, I'll trust you..."

"Thank you!" You practically scream with joy.

"Now what?" She asks, heaving one of her breasts before letting it drop.

"I still need to figure that out. Maybe we can go to the police? Or find a hero? The school definitely needs to know."