The Demon That Became My Sister / Ane Naru Mono

"The Demon Who Became My Sister / Ane Naru Mono" - based on the original manga by "Poti Ida". The original manga was hentai and was released as a doujinshi for the event "Comiket". In 2016, the author decided to create a non-hentai erotic manga, and it became the basis for this OVA anime series.

The main character is an orphan Yu, who lost his parents a long time ago and is constantly persecuted by his relatives. His gray worthless life changes after he meets a mysterious super beauty Chiyo. She decides to fulfill any wish of Yu-kun. Our hero, without thinking long, asks the busty beauty to become his beloved older sister. Chiyo was both amazed by such an unusual request and at the same time very touched by his sincere desire to find a family. Chiyo immediately agrees to fulfill the wish of our hero. However, the main character does not yet suspect who "Chiyo-san" really is...