The World's Strongest Sage In History Is Not A Good Guy

In a desperate attempt to rescue a world besieged by vampires for centuries, a deity summons individuals, sending them one by one to aid in its salvation. However, each one meets their demise in turn. Then, a solitary young man steps forward to alter the narrative. Despite his malevolent nature and criminal history, he holds enough determination to fulfill the task and save the world.

Going back years into the past, he researched all the magic known to the world to confront the forces from hell. However, things start to get interesting when a year before his fated battle, he meets a young woman who wants to become his apprentice.