Emma, his older sister

Luke took a deep breath, his decision made. He stood up, his legs still trembling slightly from the adrenaline, and made his way upstairs to Emma's room. He knocked softly on her door, hearing the rapid-fire clicking of her phone keyboard from within.

"Come in," Emma called out, her voice distracted. Luke pushed open the door, seeing his sister sitting on her bed, her brows furrowed as she typed furiously on her phone. She looked up, her expression shifting from irritation to surprise as she saw Luke.

"What's up, Luke?" she asked, setting her phone aside. Luke hesitated, his heart pounding in his chest.

"Emma, I need to show you something," he said, his voice barely above a whisper. Emma raised an eyebrow, her expression skeptical.

"Okay, what is it?" she asked, her tone impatient. Luke took a deep breath, steeling himself for her reaction.

"I discovered something today, something... impossible," he said, his voice shaking slightly. Emma rolled her eyes, picking up her phone again.

"Luke, I don't have time for your games right now," she said, her thumbs flying over the keyboard. Luke felt a surge of frustration. He looked around her room, his eyes landing on a hair clip on her vanity. He walked over, picking up the clip, and before Emma could protest, he clipped it into his hair.

The transformation was immediate. Luke's face began to shift, his jawline softening, his cheeks becoming more pronounced. His hair lengthened, the color shifting from his dark brown to Emma's lighter shade. His eyes changed shape, becoming more almond, and his lips fuller. Emma looked up, her eyes widening in shock as she saw her own face staring back at her.

"Emma," Luke said, his voice echoing hers perfectly. Emma's phone slipped from her hands, her eyes rolling back as she fainted. Luke rushed forward, catching her before she hit the floor. He laid her gently on the bed, his heart pounding in his chest.

He looked down at his sister, her chest rising and falling steadily. He knew he had to complete the transformation, to show her the full extent of his power. He walked over to her dresser, his eyes scanning the neatly folded clothes. He picked up a matching blue bra and thong, his heart racing as he removed his own clothes.

As he put on the bra, he felt a warmth spread across his chest, his body changing to fill out the cups. He looked down, seeing Emma's elegant CC breasts, the nipples hardening in the cool air. He slipped on the thong, feeling the fabric stretch over his new hips, the lace pressing against his smooth, trimmed pussy.

He turned to Emma's wardrobe, picking out a white crop top and a black skirt. He slipped them on, the fabric hugging his new curves. He looked at himself in the mirror, his breath catching in his throat. Staring back at him was Emma, her hourglass figure, her brown hair cascading down her shoulders, her blue eyes wide with shock.

Luke turned back to the bed, his heart pounding as he waited for Emma to regain consciousness. He saw her eyelids flutter, her body stirring. She opened her eyes, her gaze meeting Luke's. She gasped, her hand flying to her mouth as she took in the sight before her.

"Luke?" she whispered, her voice shaking. Luke nodded, his heart racing. Emma sat up, her eyes wide as she took in every detail of Luke's transformed body. She reached out, her hand hesitating before touching Luke's cheek, her fingers tracing the line of his jaw.

"It's really you," she breathed, her eyes filled with wonder. She stood up, circling Luke, her eyes taking in every inch of his body. She reached out, her hand cupping Luke's breast, her thumb brushing over the hardened nipple. Luke gasped, the sensation sending a jolt of pleasure through him.

"This is... incredible," Emma whispered, her eyes meeting Luke's in the mirror. "How did you do this?"

{What do you do next, Luke?}