Enter Crystal’s (POV)

Crystal got off the bus, her last class was canceled and the delivery at her job was early, so she had left work early as there was not much to do, the morning crew had put half the things on the selfs by the time she got there, as she turned to walk up the driveway, she noticed her younger sisters boyfriend’s car sitting in the driveway.

‘Someone must be making out, as long as she knows the rules’ thought Crystal as she unlocks the front door, entering the living room, kicking off her shoes, she could hear moaning coming from upstairs.

Thinking of catching her sister, she sneaked up the stairs, down the hall to her sisters room, the door was partly open, looking into the room, she could see her younger sister sitting on the bed with a boy, they where both fully nude.

‘I knew it, she knows not to have any type of sex inside the house, that’s why there is a bedroom in the garage’ thought Crystal, she then noticed her younger sister’s breasts where bigger than she remembers, not to mention her butt’ Crystal thought, that’s when Mia moved and she got a look at the boy.

‘Shit, that’s not her boyfriend...but...that cock, perfect’ thought Crystal, she was surprised to feel her pussy heat up, wetting her panties.

Pushing the door open, arms crossed.

“Well..well...what the fuck Mia, cheating on your boyfriend, not to mention fucking in this house, you know mom forbidden you doing it in the house” Crystal said with a smirk.

Mia got off the bed, the Crystals eyes widened, “how did you get your breasts so big, fuck are you pregnant” the Crystal said shocked as she noticed her younger sisters stomach had bulged out.

Mia smiled, “Jack, meet my older sister Crystal, Crystal meet Jack, my new boyfriend and future husband” she said while showing off her ring, “Jack is very special, his tongue made my pussy bigger so I could ride his” ‘sigh’ “ perfect cock, his sperm made my bust and butt bigger”

Crystal just shook her head, “you taking **** or something, guys sperm can only knock you up, not make your breasts bigger, and you must of used a pussy pump to make your wet cunt bigger” said Crystal still not believing her younger sister.

Walking closer, she grabbed her sisters arm, pulling Mia away from Jack.

“Get away from him Mia, he just wants you to cheat and get in trouble” said Crystal, “this cock is fake, it’s not real” she said.

‘This has got to be a big dildo or new sex toy’ thought Crystal as she was reaching over to yank his cock, but once she wrapped her hand around his shaft, all of Crystals clothing vanished, leaving her standing there shocked and nude, her nipples hardened, between her legs, her vagina now freed from her panties, started leaking down her leg.

‘Wtf, first my i caught my young sister cheating on her boyfriend, then when I touched his obvious fake cock, no cock can be that big and real, then when I touched it, all my clothing vanished...and...oh so horny...need to...fuck...shit, my pussy is so hot and wet’ thought Crystal as she put both hands on his cock, rubbing up and down his shaft, it was slick with her sisters juice’s.

Crystal’s (Rank A, level 4) breasts shook as she rubbed his cock, her butt (Rank B, Level 1) shook a little, she had a little patch of hair above her vagina, her juice’s making a wet spot on the bed, her legs also damp.

Crystal then felt her younger sisters tongue lick up one of her butt cheeks, making her shiver, hearing her sister giggle, then she licked her other butt cheek.