Before he became a Demon Slayer, Tanjiro was a coal burner before his entire family was slaughtered by Muzan while his younger sister, y/N, was turned into a demon. Tanjiro Kamado (竈門かまど 炭たん治じ郎ろう, Kamado Tanjirō?) 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, y/n, back into a human and to hunt down and kill demons. After tanjiro know that his lil sister became demon he is so scared.