**Chapter 1: The New Assistant**

Ariana Grande, the pop sensation, stood in her luxurious dressing room, gazing at her little brother Kieran with a mischievous grin. It had been a few weeks since she hired him as her personal assistant, and so far, he had been doing a great job. Kieran, who was only 20 years old, looked up at his sister with a mix of admiration and intimidation. Ariana was known for being a perfectionist, and he wanted to make sure he met her expectations. Ariana was dressed in her signature style - black tights, a tight-fitting outfit, and black lipstick. Her long, dark hair cascaded down her back, and her nails were painted black, matching her lipstick perfectly. She had a sparkle in her eye, and Kieran couldn't help but feel a bit uneasy. "Hey, Kieran, I need you to do something for me," Ariana said, her voice low and husky. They had just finished a concert, and she was still dressed in her stage outfit. "I want you to get on your knees and rub my feet." Kieran raised an eyebrow, unsure if he had heard her correctly. "Uh, what? Why?" Ariana chuckled, a sly smile spreading across her face. "It's just a joke, Kieran. Don't be such a prude. I want to see if you can handle a little task like this." Kieran hesitated, but Ariana's tone left no room for argument. He slowly got down on his knees, feeling a bit awkward. Ariana kicked off her shoes and placed her feet on his lap. Her black tights were sweaty and smelly, and Kieran tried not to wrinkle his nose in distaste. As Kieran started to rub her feet, Ariana closed her eyes, a look of pure pleasure on her face. Her breathing grew heavier, and Kieran could feel her eyes on him, even though he couldn't see them. He continued to massage her feet, trying to ignore the smell and the feeling of her sweaty tights. But as he looked up at Ariana, he noticed that her expression had changed. Her eyes were fixed on him, and her face was flushed. She looked... turned on. Kieran's heart started to beat faster as he realized that this wasn't just a joke anymore. Ariana's eyes locked onto Kieran's, and she whispered, "Smell them." Kieran's face went red as he hesitated. But Ariana's tone was firm, and he knew he couldn't say no. He took a deep breath and brought his face close to her feet. The smell was pungent, but he tried to do as she asked. As he inhaled, Ariana's eyes grew wider, and she let out a low moan. Her body started to tremble, and Kieran could see that she was on the verge of an orgasm. He felt a mix of emotions - confusion, discomfort, and a hint of fear. Ariana's hands grasped Kieran's shoulders, holding him in place. "Don't move," she whispered, her voice husky. Kieran was frozen, his face inches from her smelly feet. He watched in horror as Ariana's body convulsed, and she let out a loud moan. Her eyes rolled back, and she seemed to be in a world of her own. As she came back to reality, Ariana's eyes locked onto Kieran's, and she smiled. "You're going to make a great slave," she whispered, her voice dripping with seduction. Kieran's heart sank as he realized that his role as Ariana's assistant had just taken a dark and twisted turn. He was trapped, and he didn't know how to escape.