Waking in a hospital, Shiki Toono discovers a world painted with black lines and a forgotten past due to a near-fatal accident. Gifted with the power to destroy by tracing these enigmatic lines, he conceals this ability with special glasses as he embarks on a fresh start with his relatives. Years later, a family tragedy draws him back to his ancestral home, where a chance encounter with a mysterious woman reignites his dormant power. As Shiki delves into his hidden history, a mix of adventure, romance, and enigma weaves around him, beckoning forth long-buried secrets that threaten to resurface.