Demon Slayer Manga Chapter 21

The boar headed stranger is not a demon at all. Demon Slayer Chapter 21 unleashes Inosuke Hashibira, a slayer raised by wild animals, swinging two chipped blades and demanding a fight from anyone nearby. He stomps through the mansion hunting the demon by instinct alone, utterly uninterested in teamwork or plans.

In another corridor, terror finally wins: Zenitsu faints dead away in front of a crawling demon. Then his sleeping body rises, breathes, and moves like flowing lightning. One silent draw of his sword ends the threat before it understands what happened. When Zenitsu wakes, he remembers nothing at all.