Demon Slayer: The Mark of Uchiha

After his final battle with Naruto at the Valley of the End, Sasuke dies—not from wounds, but from the karmic consequences of bearing the curse of hatred for so long. However, instead of passing on, his soul is pulled into a different world—a darker, blood-soaked Japan overrun with demons. He awakens in the body of a young orphaned boy on the outskirts of a remote mountain village. Stripped of his chakra but retaining fragments of his Sharingan, instinct, and combat knowledge, Sasuke must now adapt to a world where the only defense against monsters is cold steel and Breathing Techniques. But something about him is unnatural—demons fear him. The moon itself seems to whisper his name. Will Sasuke rise again as a Demon Slayer to protect what he once failed to in his old life? Or will the curse of vengeance follow him even across worlds?