The Doctor's Angel

Merandria, an angel of the Lord, is tasked with a sacred mission from Heaven: to ensure the Doctor's survival as he faces countless dangers across time and space. Unlike her brother Castiel, who once defied Heaven, Merandria's actions are not born of rebellion, but of divine duty. Her mission is clear-protect the Doctor, for his continued existence is crucial to the unfolding of a greater cosmic plan.

Assigned to Earth, Merandria takes on a human vessel, blending into the world of mortals to fulfill her purpose. As the Doctor confronts ancient evils and cosmic threats, Merandria watches from the shadows, stepping in when necessary to guide and protect him, all while maintaining her loyalty to Heaven. Her faith is tested as she faces the looming apocalypse, but her resolve never falters-she will ensure the Doctor survives, even if it means risking her place in the natural order.

Supernatural x Doctor Who crossover, Soulmate AU