That’s why he despises Tanjiro who is considerably weaker than him at the time. Rui is the Lower Rank Five demon of the Twelve Kizuki. He is the main antagonist of the Mount Natagumo arc.

Tanjiro’s anger also emerges during battles, especially against demons who harm innocent people. He fearlessly challenges powerful foes like Rui, the Lower Moon demons, and Muzan, often pushing ...