The story is set in a world plagued by a mysterious condition known as . This phenomenon causes seemingly normal young women to develop violent split personalities with no memory of their actions.

: The prison is actually a front for a corporation that experiments on inmates by implanting the mindsets of notorious historical serial killers (like Henry Lee Lucas) to turn them into elite assassins. Why Readers Seek "Raw" Chapters

: Since the manga moved from Weekly Young Magazine to online serialization on Yanmaga Web in September 2023, new chapters are published every Wednesday.