[Nobotchi Seisakusho (Nagumo Ryuuichi)] The Case of Oyama Mahiro's Fall, Pregnancy and Childbirth! (Onii-chan wa Oshimai!)

Mahiro Oyama awakens in a feminized, exquisitely sensitive body with small, tender breasts and finds herself volunteered for a secret fall, pregnancy and childbirth experiment under a glasses-wearing dilf doctor in a lab coat. A routine examination with stethoscope and palpation melts into breathless, filmed intimacy as Mahiro, filmed on camera, grows flushed and full, clinging to her sensei and begging to be filled with creampie and left pregnant as part of the experiment. The tension deepens as that submission blossoms into a heavy, swollen pregnant belly carried proudly before stunned classmates, teasing a journey from clinical corruption to impregnation and vaginal birth that she can no longer hide.