Inosuke Hashibara's dual Indigo Nichirin swords will have to be the first one on the list. His swords are ragged and have small gaps between the blades which sort of help to slice demons with ease.
Tanjirou’s younger sister Nezuko, having been turned into a demon at the age of 12, returns to action in Demon Slayer Season 2: Entertainment District arc. However, chronologically, she is now ...