She spots Noire and Uni

Suddenly, Neptune spotted Noire and Uni walking down the street towards the basilicom. Neptune laughed maniacally as she crept towards the two. Once she got close enough, she was able to overhear their conversation.

"Why are we coming here again? It was so sudden, sis." Uni asked.

"Well, I just had something I needed to discuss with Histoire." Noire explained. "Plus, I need to return something to Neptune." Neptune snorted at the obvious lie, and Noire flipped around, startled by the noise. "What was that?" Neptune felt the urge to hide, but then she once again remembered she was invisible. Noire looked around, unaware as Neptune mocked her by swaying her hips around as she hugged her body. When she was assured no one was there, Noire turned back to a concerned Uni, and they resumed their walk. Neptune rubbed her hands together as she resumed her own walk, and walked closer. There had been something she'd been wanting to do for a while.

"So, yeah, there's nothing beyond those reasons that I want to visi-AHH!" Noire was cut off as she felt two invisible hands latch onto her breasts, and squeeze. Uni turned to her in immediate worry.

"Sis, what's wrong?!" Uni asked. Neptune thought to herself as she fondled Noire. Yep, that other girl had slightly bigger ones, but Noire's had a nice, round shape. They were fairly firm and perky, too. Any Not too big, not too small.

"W-what the-" Noire said and she tried to grasp at her chest. She was struck with fear and confusion when she touched what felt like hands on her chest, but she couldn't see anything. At Noire's touch, the invisible hands seemed to go away, and Noire was left breathing heavily, People walked by, giving her strange looks as Uni looked at her, a worried expression covering her face. As Noire tried to regain her composure, Neptune carefully reached under Noire's skirt, and-

"Um, Noire, are you-" Uni started, but stopped when she looked down, and was shocked at what she saw. "N-Noire! Y-your-" Noire paled as she slowly looked down, and found her panties around her ankles. She shrieked, which gathered the attention of those around her, which saw the situation and immediately became curious. Neptune tried to suppress a laugh as she grabbed Noire's skirt, and flipped it. Noire and Uni's faces both turned red as Uni couldn't help but look at Noire' clean-shaven pussy, which was visible for only a moment.

"U-Uni, let's-" Noire started, but was cut off again as she took a step forward and lost her balance, tumbling onto Uni, her skirt flipped up to reveal some of her bare ass to a small gathering of people that had flocked to the situation. "Ow..." Noire said, and when she realized what was happening, she quickly pushed her skirt down, an intense blush covering her entire face.

"Mmmph!" Noire heard from under her, feeling a strange sensation against her chest. She looked back to see Uni getting a face full of Noire's breasts, her face a deep red. Noire quickly got off of her as she pulled her panties back up. She helped a very flustered Uni to her feet, and quickly pulled her towards the basilicom, leaving behind a Neptune who was unable to hold back her laughter. Thankfully, no one seemed to notice that the laughter was coming from nowhere.

She had to admit though; Noire had quite a nice ass.

Neptune was eventually able to recover from her laughing fit, and rushed to catch up with Noire, excited to see what else she could do with this beautiful invisibility.