Tanjiro Kamado is the main protagonist of Demon Slayer: Kimetsu no Yaiba. He is a Demon Slayer in the Demon Slayer Corps, who joined to find a remedy to turn his sister, Nezuko Kamado, back into a human and to hunt down and kill demons in order to protect others from suffering the same fate as him.
Before he became a Demon Slayer, his entire family was slaughtered by the Demon King, Muzan Kibutsuji, while his younger sister, Nezuko, was turned into a demon as a result.