Awakening: My Yandere sister is obsessed with me Novel

Sixteen-year-old Kurokami Haruto never believed in "Awakened Ones"—individuals who mysteriously develop supernatural abilities—dismissing such tales as internet fiction. His mundane existence shifts dramatically after he defends an unfamiliar girl from thugs. Upon regaining consciousness, he discovers a system interface before him: SYSTEM: "Chosen of the Abyss" Activated Main Skill: [Moonlight Blade Manifestation] - Materialize up to three phantom blades Main Skill: [Abyssal Devour] - Harness lunar energy to enhance personal attributes Hidden Skill (Rare): [Yandere EXP Farm] - Skills gain doubled experience when obsessive individuals harbor romantic feelings toward him System Service: Scanning 10-mile radius for yanderes... One detected: Kurokami Satsuki Haruto is stunned to realize the system identifies his own older sister—a caring, beautiful nurse unusually devoted to him—as a yandere. His ordinary life with Satsuki suddenly becomes far more complicated as he grapples with this shocking revelation and his newfound powers.