Akane expected condemnation or horror from her oldest sister. Kasumi was the maternal member of the family, the sweetest girl Akane ever knew and more innocent then a newborn baby. Being caught by Kasumi was worse then being found out by her own father. If Soun found out she would only be mortified, Kasumi made her feel ashamed. Waiting for Kasumi to tear into her, Akane closed her eyes and prepared for the worst.

“Akane, could you please not masturbate in the hallway. It leaves stains on the floors that are very hard to get out.”

“I’m so sorry Kasumi! I promise I won’t do this again! It’s all Ranmaaaaa…. Hold on a second. What did you say?”

Standing over her sister with her usual patient, sweet smile, Kasumi told her again without pause, “I said that I’d prefer if you didn’t masturbate in the hallway. Its hard enough getting the stains you, Nibiki and Ranma leave on the sheets out. If I have to mop the floor every time any of you decide to have fun my workload is going to become too huge.”

Akane’s mouth hung open as her brain slowly processed everything. Ranma, Nibiki and her were so careful, they made sure no one was around or everyone was asleep when they had sex. They thought they were being so careful, but they hadn’t thought once about the mess they left behind. Akane could now vividly remember all the cum stained bed sheets and blanks she had given Kasumi to wash. Akane had screwed up big time and now another person knew about her decent into perversion. Feeling faint, Akane wondered if today could get any worse.

“Kasumi, let me explain,” Akane began as she tried to come up with a way to defend what she was doing. All that was coming to mind was to blame Ranma and Nibiki, which was the truth. Those two perverts had corrupted her , but she didn’t think that excuse would cut it with Kasumi.

“There’s no need, its hard to remember to clean up after a nice orgasm,” Kasumi piped up before Akane could start laying out the blame. Placing her hand under her chin, Kasumi thoughtfully started to reminisce. “I know that I some times forget to clean up after Nibiki eats me out, but I try to remember to wash the sheets before the cum dries, put all the dildos we use into the washing machine and floss incase any hairs between my teeth.”

At that point Akane thought she had passed out after her orgasm and was now having the most messed up dream of her life. Needing to make sure that this was a dream, she pinched her chubby side hard. When the pain hit her, she pinched herself again, this time on her sensitive breasts. She kept pinching herself all over until Kasumi spoke up. “Akane, what did I just say? If your going to pleasure yourself wait until you get back to your room.”

“Hold on, are you telling me that Nibiki has been having sex with you too?!” Akane cried out as she wobbled onto her knees and stared up at Kasumi in shock. She couldn’t believe it, her sisters were having sex together. The fact that she was doing it with her other sister wasn’t half as surprising as finding out Kasumi was doing it too. It was so hard to wrap her head around that her sister, the epitome of the timid, innocent housewife, was committing incest that Akane was still having trouble believing it. “I guess even Kasumi gets aroused after eating people,” Akane numbly murmured as she struggled to imagine her sisters together.

“Actually I don’t find it that arousing to eat people,” Kasumi flippantly mentioned. “I just find it nice to give and receive some affection now and again. Nibiki has gotten really needy since we stated last year and needs some sisterly love to get through the day sometimes.”

Akane flopped down onto the floor, her brain finally giving out. Her sisters have been fucking for over a year, long before they started eating anyone or Ranma even showed up. Feeling like crying, Akane finally understood why she couldn’t control her libido, she was born into a family of sluts. Akane groaned in despair, her cries mixing with the moans coming from inside her. It wasn’t enough to find out her family were perverts, she also had to listen to her fiancée and rival get off inside her, sending pleasure through her body at the same time. Looking over her baby sister, Kasumi reached down and patted Akane’s bloated midsection with a smile across her pretty face.

“Oh my, I think Ranma and Shampoo might have the right idea. Having sex inside someone is a very efficient way to not leave a mess.” Kasumi then looked past the belly to her sister who was wincing in pleasure. “Don’t worry Akane, you’ll get to play with Ranma and Shampoo when they come out. I’m sure if you ask nicely Shampoo will even let you clean Ranma’s cum out of her. She’s such a nice girl after all.”

“I’m surrounded by perverts!” Akane wailed as she felt more cum drip from her pussy onto the floor.