Omega Simulator

“Welcome, Jack,” came a voice from overhead. He looked up and saw a speaker in the ceiling.
“How did it know my name?” he asked himself but there was no one there to answer.
“Thank you for choosing our simulator. First, we’ll need to change your physical form. Omegas often carry more weight than an alpha,” the voice explained. “Do you accept the adjustment?”
“Um, sure,” Jack replied. He grunted when he felt a sudden shift in his body. It almost felt like his body was being filled with water. He looked down at himself. His muscles disappeared. Then, they were being replaced by a layer of fat. His chest softened, but his belly took the brunt of the expansion.
“Oh, god,” Jack groaned as he felt his tone stomach begin to shift outwards.