Luke makes an excuse to leave, wanting to explore his power more privately.

Luke's heart pounded in his chest as he watched Emma sort her clothes, her back turned to him. The sight of her lacy black bra peeking out from the basket sent a wave of temptation crashing over him. He knew he had to explore this power further, but not here, not now. He needed privacy.

"You know what, Emma?" Luke said, standing up abruptly. "I, uh, I just remembered I have some homework to finish. I'll come back to this later."

Emma turned to look at him, a slight frown on her face. "Okay, sure," she said, shrugging. "I'll finish up here. Don't forget, Mom wants us all to have dinner together tonight."

"Yeah, yeah, I'll be there," Luke muttered, already moving towards the door. He grabbed a few pieces of clothing from the pile, trying to act nonchalant. "I'll just take these up to my room."

Emma rolled her eyes but didn't say anything else. Luke hurried out of the laundry room, his heart racing with anticipation and nerves. He rushed up the stairs to his bedroom, closing the door firmly behind him.

He dumped the clothes on his bed, his eyes scanning the items he had grabbed. There was a shirt of Jake's, a dress of Amanda's, and, to his delight, Emma's lacy black bra. He picked up the bra, feeling the soft, delicate fabric between his fingers. His heart pounded as he imagined what it would feel like to wear it, to have Emma's breasts as his own.

Luke took a deep breath, steeling himself for what he was about to do. He removed his shirt, the cool air of his room raising goosebumps on his skin. He held the bra in his hands, his heart racing with a mix of excitement and trepidation. He slipped the straps over his shoulders, fastening the clasp behind his back.

A warmth spread across his chest, and he looked down to see his own flat chest swelling, growing into the full, round breasts of his sister. He gasped, the sensation overwhelming. He cupped his new breasts, feeling their weight and softness. His nipples hardened under his touch, sending a jolt of pleasure through him.

He turned to look at himself in the mirror, his eyes widening at the sight. Emma's breasts looked perfect on him, the lacy bra pushing them up and together, creating a deep cleavage. He ran his hands over his new curves, marveling at the sensation. He could feel the softness of his skin, the firmness of his breasts, the roughness of his palms against his sensitive nipples.

Luke's breath hitched as he continued to explore his new body. He slipped his hands into the cups of the bra, feeling the warmth and weight of his breasts. He pinched his nipples, a gasp escaping his lips at the sharp pleasure. He could feel the wetness growing between his legs, his own cock hardening at the sensation.

He looked down, seeing the bulge in his jeans. He unbuttoned them, sliding his hand inside to grip his cock. He was harder than he had ever been, the sensation of his new breasts sending waves of pleasure through him. He stroked himself slowly, his eyes locked on his reflection in the mirror.

The sight of himself, with Emma's breasts and his own hard cock, was overwhelming. He could feel the pleasure building, the tension in his body growing with each stroke. He pinched his nipples again, a moan escaping his lips as he felt his orgasm approaching.

But he didn't want to rush this. He wanted to explore this new body, this new pleasure. He slowed his strokes, his breath coming in ragged gasps. He could feel every sensation, every touch, every movement. It was intense, overwhelming, and he never wanted it to end.

{What does Luke do next?}