There's a party at Emily's tonight and Jemma was invited. She isn't one to go crazy for events, and she knew everyone there, so she figured she'd just change her shirt and leave her house, so she did. She put on a red long sleeve v-neck. She arrived and saw that the crowd was decently sized, Emily was nearby and greeted her. Jemma doesn't want to be hung over so she had a quick cocktail as a warm up and switched to soda. She sat down and talked to some of her friends for a bit, eventually she started lounging, she ate some nachos and went on her phone, nobody cared.
Emily's sister Jazz is bisexual and known for being particularly slutty when she's drunk, Jemma saw her a few times this night but they didn't talk much. She noticed Jazz was getting pretty hammered, off light drinks (important later), but she was still looking pretty lit. She was a bit loud and a little obnoxious but that's a wash, Jemma told her autism sensory problems to fuck off for the night. She danced a bit with a few people over the course of the night, within Jemma's field of vision anyway.
At one point Jemma was on her phone not paying attention to anything going on, when she saw Jazz coming to her. "Hey, gorgeous." Jazz said rather fast. "Hi, Jazz!" Jemma feigned enthusiasm. "I want to show you something, come here!" Jemma took the last sip of her drink and complied, Jazz took her by the hand and RAN through the first floor of the house and up the stairs to her bedroom. Jemma had an inkling of what was about to happen.