The big bad of this arc is Hantengu, a seemingly pathetic Upper Moon who can divide his body into multiple bodies with different powers and representative emotions.
What appears to be a simple excursion to the Swordsmith Village to pick up Tanjiro's repaired sword turns into an all-out brawl between humans and demons. The big bad of this arc is Hantengu, a seemingly pathetic Upper Moon who can divide his body into multiple bodies with different powers and representative emotions.