Ga-Rei is a Japanese manga series written by Hajime Segawa. It follows the story of Kensuke Nimura and Kagura Tsuchimiya as they battle supernatural entities. The series explores themes of friendship, betrayal, and duty, set against a backdrop of action and supernatural occurrences. The anime adaptation, Ga-Rei: Zero, serves as a prequel, adding depth to the characters and their backstories. It combines intense action sequences with emotional storytelling, making it a compelling watch.