Jaune was built by The Professor Nikos Pyrrha's Grandfather and was made to bring peace to humanity and destroy the Grimm. But after Pyrrha's death he went Insane and wanted Revenge, But Meet a Certain Fashion Girl named Coco who reminds him of his dead Friend will Jaune be able to protect humanity and keep his wish to his late Friend Pyrrha or destroy the world

Izuku had a unpleasant upbringing being born from a Demonic father named Trigon and human mother Inko He wants to become a hero. But not wanting to give Into his demonic powers. will Izuku learn to control his powers or will he become just like his demonic father Trigon

Tanjiro is a half human and Demon a demon named Sparda that came from the underworld and built a reputation of a Demon that kills Demon's and almost killed Muzan 1000 years ago and betrayed The Demon lord Mundus and sealed him away. Now with both Demon lords wanting revenge against the Demonic traitor, will Tanjiro and Nezuko finish the Job that their father or fail