Alexandria

Tanjiro's younger sister, turned into a demon but retaining her humanity. Her unique existence challenges the protagonist's understanding of this new world.

The aloof but skilled Water Hashira. He is the first high-ranking slayer the protagonist meets, providing a harsh introduction to the reality of their situation.

A compassionate and determined Demon Slayer seeking a cure for his demon sister. He encounters the protagonist early on, becoming a crucial ally.

A normal person from our world mysteriously transported to Taisho-era Japan. They must quickly learn the ways of the Demon Slayer Corps to survive.