
University student Mimi Usazaki faces a daily battle with depression as she navigates her psychiatric sessions and a dismal college experience. One day, she becomes entangled in a mysterious experiment that changes her life forever. Through this experiment, she inadvertently becomes the host for the consciousness of Hyou Usazakiher, her estranged younger brother, who is also a death row inmate. Now, Mimi is forced into a perilous conflict against other death row inmates who have undergone the same experiment. Will she be able to endure the turmoil that follows? Or will her bond with her brother lead to her demise?