Demon Slayer: I Will Be The Strongest

Kamado Tanjiro's family was killed by someone. His sister, Kamado Nezuko, was transformed into a human eating demon during all of that chaos. It was all a blur, and now he was training under someone named Sakonji Urokodaki to become a Demon Slayer. He will find the person who killed his family and find a cure to turn Nezuko human again. But first he needed to become the strongest.