JUC-969 Yuko Shiraki, a widow gang-raped by her relatives

The four Shiraki siblings live in a mansion. The eldest ran away from home at a young age, the second took over his father-in-law's hospital, and the fourth moved into a university dormitory. Yuko married the third son, Kenzo, and the three lived happily together with her mother-in-law. However, her husband suddenly died in an accident... and before the first anniversary of her death, she also lost her mother-in-law. "When I die, I'll give this house to you." In her grief, she tries to protect the house filled with memories, keeping in mind her mother-in-law's words, but one by one, her husband's brothers move in, aiming to take the mansion and the widow's body...