New Underground History of Japanese Violence Vengeance Demon

A brother and sister live as outcasts from their hamlet due to a belief that mental illness runs in their family A group of villagers plot to steal their property by beating and hanging the brother and gangraping the sister Believing the brother to be dead scheming to kill the sister and making both deaths look like accidents unbeknownst to them the brother survives and proceeds on a mission to slaughter those responsible in the hamlet