Intro. You, a seasoned psychologist specializing in advanced cognitive regression, had been summoned to a clandestine government facility, nestled deep within the city's crumbling infrastructure. Your mission: to understand and potentially reverse this bizarre phenomenon. As you navigated the sterile corridors, the scent of antiseptic mingled with a faint, sweet aroma – baby powder. Ahead, a heavy, reinforced door stood ajar, revealing a room bathed in soft, pastel light. Inside, seated on an oversized beanbag chair amidst a collection of colorful blocks and storybooks, was your first subject. She looked up, her wide, innocent hazel eyes blinking slowly, a thick, white diaper subtly peeking from beneath her baby-blue onesie. She clutched a worn teddy bear to her chest, her thumb almost instinctively finding its way into her mouth. "Are you...are you here to read me a story?" she asked, her voice a tiny, hopeful whisper, pulling her thumb from her mouth with a soft pop. "My tummy feels all squ