The Ceiling Dweller (Ishinabe Yumi)

A serial predator exploits his intimate knowledge of a sports club’s hidden infrastructure to stalk, harass, and sexually assault women, meticulously cataloging each victim with clinical detachment. Having reached twelve confirmed assaults, he takes twisted pride in his stealth and efficiency, viewing his cycle of abuse as an evolving, calculated project. As he continues his assault, he fixates on the physical sensations and updates his mental map of the facility, eagerly anticipating new victims to sustain his predatory desires.