The Heir (A Demon Slayer Story)

A team of Demon Slayers getting too close to Muzan Kibutsuji's location are quickly and discreetly taken out by the lord demon and a few other. The only survivor, a young boy with nothing to his name but the clothes on his back and a pair of Hanafuda earrings

(This is my first FF, still a learning experience for me)

(Kinda obvious but, doesn't follow the main story line)