07-Ghost

07-Ghost is a Japanese manga series written and illustrated by Yuki Amemiya and Yukino Ichihara. The manga is set in a fantasy world with a medieval European aesthetic and revolves around Teito Klein, a former slave who attends a military academy in the Barsburg Empire. He discovers he is a key figure in a prophecy connected to the empire's past and a war between a god and a powerful demon.

The story follows Teito's journey as he seeks refuge and training in the Church, which protects him from the military and the dark forces pursuing him. He becomes involved with the Seven Ghosts, powerful protectors of the Church, each possessing unique abilities. Teito is mentored by these Ghosts as he learns to control his own latent powers and uncover the truth about his past and his connection to the demon king Verloren.

Key themes in 07-Ghost include destiny, freedom, redemption, and the importance of bonds and friendship. The narrative explores the concepts of fate versus free will and the sacrifices people make for their beliefs and loved ones. The manga is known for its complex plot, intricate character development, and blend of action, drama, and religious elements. It has been adapted into an anime television series.