Kaito, a gifted young swordsmith in modern-day Kamakura, is haunted by visceral dreams of a past life as a samurai named Haruki, who was betrayed and slain alongside his forbidden love, Lady Akane. His life is thrown into turmoil when he meets Rin, a university historian who has come to study his family’s ancient swordsmithing techniques. Kaito is stunned by her uncanny resemblance to the woman from his dreams. As fragmented memories of their shared past surface, they discover that the vengeful spirit of Haruki’s betrayer has also been reborn, determined to finish the destruction he started centuries ago. Kaito and Rin must now unravel the truth of their past to fight a battle for their present, where love and hatred echo across time.