Metaro is a teenager who committed a serious crime and ended up in prison. A mysterious man inside offers a strange proposition — using dice to decide who serves as bait in a mutual escape plan. After losing again and again, Metaro enters a series of distorted new worlds: first a high school called Private High School of Knowledge, then a primary school alongside classmates named Qiqi and Xuemaru. The girls there have been played and persecuted. Metaro's fate — and theirs — will be determined by the choices you make. A dark visual novel about cycles of harm and the decisions that break or continue them.