Oni Chichi(2009)

Oni Chichi is an adult anime series that explores the dark dynamics between a stepfather named Atsuki and his two teenage stepdaughters, Airi and Marina. With their mother frequently absent due to work commitments, Atsuki exploits the opportunity to pursue his predatory desires without restraint. The narrative unfolds as a disturbing portrait of manipulation and abuse within the family unit, centering on the vulnerability of the young girls and the stepfather's exploitation of his position of trust. The series presents mature themes in a genre that blends psychological drama with explicit content, examining the consequences of unchecked power imbalances in domestic settings.