[Takatsu] The Making of a Cult Leader Ch.1-2 {Doujins.com}

Matsubara is just a bullied boy haunting the school library until Mitsuwa, a cult matriarch built like a fertility idol — enormous heavy breasts, a thick sweat-glossed ass, and a masked smile — takes him in for 'training.' Drugged, drained, and ridden by her masked priestesses until he shames himself and blacks out, the boy watches his body remolded and his will quietly scraped hollow. By the time the sect names him its next leader he has stopped asking why, and the congregation's hungry eyes have already settled on his own family's daughter.