Mutual Masturbation

Yang knew she shouldn't, but she didn't care.

She just stood there, watching in amazement as Ruby, her baby sister, masturbated in front of her. She got a front view of all of Ruby's gifts and details. She was small, but well-proportioned. Yang continued stroking herself as she watched.

Ruby stared intently at Yang. She knew she should feel embarrassed. She had masturbated more than she cared to admit since entering puberty, and she long-since mastered the art of hiding that she was doing it whenever her sister walked into the room. And now, here she was, naked and touching herself in front of Yang. She couldn't help it. Yang was so beautiful. Her breasts were so big and round.

Ruby and Yang gasped at the same time as they shared a climax. They stood there for several long seconds, both incredibly turned on. That's when it struck Ruby.

"Y-Yang?" she asked quietly.

"Yeah...?" Yang asked, avoiding eye contact with her sister.

"I think Weiss's Dust did this to us," Ruby muttered.

"I think you're right," Yang said. "We gotta find her."

"But one more thing," Ruby said.

Without saying a word, Yang nodded in agreement. The two half-sisters masturbated in front of one another one more time. Then they got out and got dry. The locker room had emptied out, and they masturbated a third time before getting dressed.

Then they went out to find Weiss.