"Tokyo Ravens" is a supernatural manga series set in a world where onmyōdō, a traditional Japanese esoteric cosmology, is integrated into modern society. The story centers on Harutora Tsuchimikado, a boy born into the prestigious Tsuchimikado family of onmyōji, practitioners of onmyōdō. Despite his lineage, Harutora lacks spiritual power and lives an ordinary life, distancing himself from the family's legacy. His childhood friend, Natsume Tsuchimikado, the heir to the family, possesses immense spiritual abilities and is destined to become the next head of the Tsuchimikado clan.

The narrative takes a dramatic turn when Harutora and Natsume reunite after years of separation. Natsume enrolls in Onmyō Academy, a school for training onmyōji, and Harutora, inspired by a desire to protect her, decides to join as well. However, their reunion is complicated by the resurgence of the Yakou Tsuchimikado, a legendary figure whose actions in the past led to catastrophic events known as the Great Spiritual Disaster. This disaster caused widespread destruction and altered the balance between the spiritual and physical worlds.

As Harutora begins his training, he discovers latent spiritual abilities tied to his family's history. His journey is intertwined with Natsume's, who harbors a secret about her true identity. The series explores themes of duty, identity, and the consequences of wielding power, as Harutora and Natsume navigate the complexities of their roles within the onmyōji community. They face numerous challenges, including rival factions, ancient curses, and the lingering influence of Yakou Tsuchimikado.

The supporting cast includes Touji Ato, Harutora's best friend and a half-demon, and Suzuka Dairenji, a skilled onmyōji with a mysterious past. Together, they confront supernatural threats and uncover hidden truths about the Tsuchimikado family's legacy. The story builds toward a climactic confrontation involving the reincarnation of Yakou and the potential for another Great Spiritual Disaster, forcing Harutora and his allies to make difficult choices to protect their world.

"Tokyo Ravens" blends action, mystery, and supernatural elements, creating a narrative that delves into the intricacies of onmyōdō and its impact on both individuals and society. The series balances character development with a steadily escalating plot, offering a compelling exploration of its richly constructed world.