Demon Slayer has risen to prominence as an action-packed and emotionally resonant shonen anime in a similar vein as Jujusu Kaisen and Bleach. Fantasy anime series like those tend to have memorable and well-defined villains, some of whom are halfway sympathetic while others are unforgivably wicked or twisted. That leads to some truly dark character designs for Demon Slayer's superhuman villains.
Source：https://www.cbr.com/dark-demon-slayer-villains/
