Naruto Nozaki, eldest heir to the Nozaki dynasty, imposes tyrannical control over his sister Anzu, imprisoning her within the family estate under the guise of protection. His obsession, sparked by discovering their lack of blood relation, manifests as calculated isolation, severing her from societal connections. Anzu’s defiance—securing a pet cat and fleeing via delivery truck—forces Naruto to grudgingly concede to her independence. Their fragile truce collapses during a violent robbery that ends his life.

Reborn into the corpse of Anzu’s deceased feline, Naruto’s psyche twists into overtly perverse fixations, consumed by possessive obsession. Retaining human consciousness and carnal urges, he shadows Anzu—now renamed Juliet—as she navigates independence, working at a veterinary clinic and communing with spirits of dead animals. His reincarnated form lingers indefinitely, persisting as an unresolved guardian figure, motivations eternally suspended between twisted devotion and unrelenting fixation.