Nonoka and Hinano are high school sisters who lived happily with their father-in-law Yoshio in the countryside.However, one day, their father-in-law passed away, and it was their brother-in-law Koji, who had returned from the city, who was left to take care of them.At first, Koji behaves kindly, but his gaze towards the sisters gradually changes to one filled with desire, and he begins to control them in an insidious way.Nonoka tries her best to protect her sister, and Hinano stays close to her sister even though she is on the verge of being crushed by fear.However, Koji's abuse escalates, and eventually he brings a rich man into his house and forces the sisters to sell their bodies.In a dark house with no escape, the two try to survive while supporting each other with a sliver of hope in their hearts.Behind the sisters holding hands in front of the Buddhist altar, Koji's indelible shadow loomed over them.
