Girlfriend swap!

"...alright, so, how do you wanna do this?" Kaminari asked.

Izuku thought for a moment, before smiling. "Let's go with a swap of Ochaco and Kyoka?"

"I don't mind," Ochaco nodded with a grin. Kyoka also nodded.

"Good, then, um..." Izuku thought, before inspiration struck. "How about you both get on all fours, facing each other, and make out?" he suggested.

Both girls immediately nodded, Kyoka settling back onto her hands and knees right in front of Ochaco, who mirrored her motions. They both leaned their heads forward, and their lips met, kissing each other passionately. Izuku and Kaminari moved past each other as Izuku got his cock out, and he then knelt behind Kyoka, and lined his cock up with her wet slit.

Likewise, Kaminari knelt behind Ochaco, and pressed into her as Izuku did the same with Kyoka. They placed their hands on the asses of the girls they were slowly fucking. Both girls moaned into their kiss, thrusting their hips back against their respective fuckers. Ochaco took on her Neko form as the sexual fun happened.

Kaminari blinked as he watched Ochaco's tail grow out before him, watching it sway lazily. "Wow, um..."

"You can go ahead and grab it," Izuku nodded, slowly picking up speed with his thrusts into Kyoka. "It's designed to feel good when pulled instead of hurting."

Hesitantly, Kaminari reached forward and grasped Ochaco's tail, making her mewl in delight. He lightly tugged, making Ochaco purr into Kyoka's mouth. Kaminari picked up speed and noted, "Okay, yeah, that's hot..."

"Yeah, it is," Izuku nodded as Kyoka got into the bit of playing with Ochaco's cat parts, using her earphone jacks to scratch her behind her ears. Ochaco purred louder as Kyoka moaned from the stimulation to her jacks.

Before long, Izuku and Kaminari were outright pounding into their respective girls. "Unh... Maybe you should give me an animal girl form too," Kyoka gasped out, momentarily breaking the kiss.

Izuku chuckled, squeezing her ass. "Don't worry, I'll think about it." She nodded, before resuming the kiss.

Ochaco and Kyoka came first, one after the other with loud moans, continuing to kiss each other. The stimulation in their pussies, and their additional erogenous zones simultaneously was enough to overwhelm them. Their loud cries of release spurred both Izuku and Kaminari on, and they pounded even faster and harder into the girls, before Kaminari gasped out as he came inside of Ochaco.

Izuku moaned as he followed suit inside of Kyoka seconds later. Both girls broke the kiss and collapsed out from under Izuku and Kaminari grinning like fools as they felt the warm seed inside of them. "Jeez, you guys turned me into a freaking nymphomaniac," Kyoka wheezed.

"I'm long last that realization myself," Ochaco giggled.