Lily, your fat-assed, busty 16 year old sister.
From Create Your Own Story
Lily takes after your mom, definitely. She's busty, with big, sexy DD's despite her young age, and an ass that you want to just fuck for days. She's got big, cute green eyes and shoulder length red hair, and always wears really cute clothes. You know she's your sister, but shit she's fuckable. So, why not make use of that body of hers, now that there's no way she'll turn you down?
How do you go about it?