Give her some 'confidence' pointers

"Thanks for looking out for me."

"Don't mention it." Seriously, don't. "I'm just worried that someone might come in while you change."

Far from any students, Cardin and Ruby are alone in one of the farthest bathrooms from the podium. Cardin told her that it's best that they are alone, playing on Ruby's insecurity that someone might walk upon them. He already locked the door and even placed their luggage to block it, just to be safe. While Ruby tries to find a change of clothes, he sat by the marble sink.

"Say, you mention that Yang is your older sister, but you two look like the same age."

"Well, our dad is a bit of a horny guy." Said Ruby as she rummaged through her bag.

Cardin noticed that Ruby was still being honest. "Wow! So you have the same father?"

"Yeah. Our moms were fine with it. We were just days apart, so Yang thought that they got pregnant in a threesome. Is that what they call it?"

He took a deep breath just to stop his laughter. No filter. At. All. "Yeah. That's what they *cough* call it."

When Ruby found the right clothes, she was about to go to one of the stalls. "Hey, want me to teach you about being confident?"

"Yes. I was thinking that you can teach me sometime."

"Great, because now would be a good time for a lesson." He hopped down from his seat before he walked towards the redhead. "How about you change in front of me?"

"Sure, I guess." She closed the bathroom stall. "I think it's fine if it's you."

She unzipped her top, her breasts popping out as they were kept hidden underneath. When she took it off, Cardin saw that Ruby was surprisingly toned; the thick fabric of her clothes hid her well-trained arms and developed abdomen. But what caught his attention was her breasts. A plain red bra helped the two bulbous orbs secure, but they look like they were about to burst. When her bra was undone, he discovered that their shape was perfect; big and perky. "You have such great tits, Ruby."

Ruby blushed at the compliment. "Thanks."

"But why do you hide them, though?" His hands landed on her chest, squeezing and lifting her breasts. His fingers were sinking into them, like holding unto large pillows or a giant marshmallow. Her nipples were pink, untouched, as they hardened the more he enjoyed himself groping her. "Can I have a taste?"

"S-sure." It sent shivers down her spine when his lips wrapped around his teats, his tongue flicked and drew circles on her nipples. "They always told me that my breasts remind them of Yang's. So, I hid them."

With one last suck, Cardin's lips left her breast with a pop. "That's rough. Maybe you should NOT hide them, y'know? Show some of your own cleavages. Maybe people will remember that the owner of these," He jiggled the two milk bags, "is none other than Ruby. fucking. Rose?"

"Don't say that. That's a bad word."

"Swearing is normal."

"That's fucking fine, then." Said Ruby. "But how the fuck should I do that then?"

"I can help you with that. You pick the clothes, I'll tell you if they are hot or not." Groping her left him with a cock making a very obvious tent in his pants.

Time to teach Ruby a real lesson.