It gets pretty amusing and fun quickly!

Once they got back into Momo's bedroom, Ochaco stiffened, and her cat ears and tail returned. She dropped to all fours, blinking and regaining her bearings as her sex cat self. "Back to this then, eh?" Setsuna teased her, leaning down to pet her head.

Ochaco purred, nuzzling her head into Setsuna's hand, and shifted, before pausing... Then she suddenly hissed and started clawing at herself, making Setsuna blink and back off. "Nyah!" she protested something the others didn't understand at the moment.

"What got into her, ribbit?" Tsuyu asked, looking at Ochaco, concerned.

Izuku stared, and then suddenly remembered some cat videos of the felines in question having been out into sweaters... And not appreciating it in the slightest. "She must be reacting to the clothing she's currently wearing," he laughed, kneeling next to her. Sure enough, Ochaco had one of her sleeves between her teeth and was tugging at it.

As Izuku started to hold Ochaco down and get her clothes off, the others stared. "...out of context, this would seem so wrong," Tooru quipped. That got a laugh out of Setsuna and Momo, and a smirk from Tsuyu.

"I'm just glad she wasn't having a seizure due to my magic or something," Momo replied.

"... that's not actually possible, is it?" Tooru asked, staring at Momo in worry.

"Not as far as I know," Momo replied, giggling. "Pretty sure the Lamp would have told me if that was a potential side effect... Then again..."

"Don't mess with Tooru's head like that, Momo," Izuku snorted, able to tell that Momo was fucking with her at this point.

"You're no fun, Master," Momo chortled as Izuku finished getting Ochaco's clothes off. She shook herself, looking a bit indignant, before stretching languidly.

Izuku raised an eyebrow at her. "That's not the time you were singing last time I was balls deep in you," he quipped, making Setsuna burst out laughing.

"I'm so proud of you!" she told Izuku wiping a mock tear from her eye, and causing him to roll his eyes playfully.