Oyako Rankan The Animation

Based on the adult game by Alice Soft. A remote mountain village contains the residence of the headman, Kojiro. Long-standing secrets are concealed within this house. The community has suffered from a declining population, and to address this, the headman instituted a system where women from the Kamishiro family are supplied to the village. This practice is called the "Feast." A decade ago, a major fire left only two survivors: the protagonist Mamoru and his older sister-figure, Kotone. With no home, they were adopted by the Kamishiro family. Kotone was welcomed as the eldest daughter, while Mamoru was relegated to the status of a servant. The time for the next Feast arrives, and Kotone is selected to participate. She consents, motivated by her sense of duty to the family and to Mamoru. Although aware of the Feast's true nature, Mamoru goes along with it out of obligation. However, complications arise.