In the damp, decaying bathrooms of Haruka High School, an ancient evil waits behind the last stall door. When a polite voice whispers from the shadows, "Red paper... or blue paper?", there is no safe answer. Seventeen-year-old Mia Takahashi, a half-American transfer student still grieving her father's death, arrives at the isolated mountain school unaware of the deadly legend. But the whispers find her quickly. A chilling warning from a classmate and a strange half-red, half-blue sheet of toilet paper pull her into a nightmare she cannot escape. As bodies begin to pile up - one flayed alive, another strangled without visible marks - Mia and a small group of terrified students must uncover the tragic origin of Aka Manto: a vengeful spirit born from obsession and violence in 1930s Osaka, forever stained by his blood-red cape. Now the curse has returned, spreading fear and death throughout the school. Mia must confront the masked figure in the cursed bathroom and face an impossible choice. But every decision only seems to bring the spirit closer. Blending classic Japanese yokai horror with psychological terror and slow-building dread, Aka Manto: The Red Cape in the Last Stall is a modern retelling of one of Japan's most infamous urban legends. Will Mia survive the final question?