Kamikakushi no Eden

Kuroto Hinata lives in a world where his sister has been erased—not from existence itself, but from the memory of everyone who once knew her. Though her presence lingers in his heart, not a single other person recalls she ever lived. Desperate for answers and tormented by this singular isolation, Kuroto clings to the fragile hope that his sanity hasn't betrayed him. That hope takes a strange turn when the beautiful new transfer student, Shirai Shizuku, slips him an enigmatic note that cuts through his solitude: *"If you want to know about the whereabouts of your sister, come to the library after school."* Drawn by the possibility of finally finding a lead, Kuroto follows her instructions. But the scene that awaits him in the dim, dusty library is far from ordinary. He finds Shirai in a state of inexplicable undress, waiting for him as if this bizarre circumstance were the most natural prelude to the truth. As the lines between reality and illusion blur, Kuroto is pulled into a mysterious and unsettling conspiracy. With an unreliable transfer student as his only guide, he must uncover what truly happened to his sister—even if the answers threaten to expose a secret that was meant to stay hidden forever.