Demon Slayer: Every Upper-Rank Demon And Their Powers Explained

Among the demons in Demon Slayer: Kimetsu no Yaiba, none are more powerful than the Upper-Rank Kizuki; the Upper-Rank Kizuki are the six strongest demons under Muzan, and with Muzan, himself, rarely taking an active role in the plot, they tend to present the biggest challenge to Tanjiro and other Demon Slayers.