​Join Masayoshi, Daisuke, Mitsuru, and Shinya as they embark on a dark and thrilling journey to uncover the truth behind the murder of their beloved teacher, Professor Yuko, in Nankai Academy. Determined to find justice, the four male students stumble upon a chilling clue: a marked planner containing the names of seven girls, all linked to the night of the fatal incident. Using any means necessary, including rape, manipulation, and torture, they delve into a world of darkness where their own desires threaten to consume them. Will these troubled young men be able to piece together the puzzle and finally reveal the shocking secrets behind Yuko’s death? Get ready for a harrowing tale of lust, revenge, and betrayal that will leave you breathless.​

​”Nankai Academy is shaken by a heinous crime when Professor Yuko is brutally murdered. Left bewildered, pained, and consumed by rage, her students embark on a mission to uncover the truth. Driven by a vital clue in Professor Yuko’s planner—containing the names of seven girls marked on the night of her death—the four male students, Masayoshi, Daisuke, Mitsuru, and Shinya, spare no means to solve the mystery. Their investigation takes them down a dark path involving rape, manipulation, and torture, slowly succumbing to their own twisted desires. As they struggle to piece together the grim puzzle, their pursuit becomes more intense, raising the question: will they ever discover what lies behind Yuko’s tragic demise?”​