Demon Slayer Chapter 21

Demon Slayer chapter 21 plunges the group into the supernatural dangers of the Tsuzumi Mansion, introducing the room-shifting abilities of Kyogai, the Drum Demon, while separating the protagonists into perilous situations. The chapter opens with the discovery of a deceased victim who fell from the mansion, causing Tanjiro distress over the pain the man must have endured. The children's confirmation that this isn't their missing brother Kiyoshi provides relief but also emphasizes the ongoing danger within the demon's domain in the Demon Slayer manga.

As the group prepares to enter the mansion, Zenitsu's terror becomes overwhelming, and he desperately seeks Tanjiro's protection while confessing to having multiple broken bones. His attempts to convince Tanjiro to stay with him reveal both his genuine fear and his recognition of Tanjiro's competence as a demon slayer. The children's unexpected decision to follow them into the mansion, frightened by the mysterious sounds emanating from Nezuko's box, creates additional complications and responsibility for Tanjiro, who must now protect civilians while facing unknown supernatural threats.

Inside the mansion, the true horror of Kyogai's Blood Demon Art is revealed. By striking the drums embedded in his body, Kyogai can instantly rotate rooms, shift gravity, and rearrange the entire layout of the mansion, creating a disorienting and deadly environment for his opponents. This unique ability separates Tanjiro from Zenitsu and the children, forcing him to confront the demon alone while simultaneously protecting the innocent. Tanjiro's encounter with Kyogai showcases his remarkable spatial awareness and adaptability as he navigates the constantly shifting rooms, desperately searching for the demon's weak point in the Demon Slayer series.

At the chapter's climax, Tanjiro faces the challenge of adapting his Water Breathing techniques to Kyogai's unpredictable attacks and the mansion's chaotic environment. He recognizes that traditional breathing forms are ineffective when the very ground beneath him is constantly shifting. This forces him to develop new strategies, focusing on rapid observation and anticipating Kyogai's drum beats to maintain his balance and close the distance for an attack. The chapter concludes with Tanjiro protecting the terrified children from the demon's attacks, demonstrating his unwavering resolve to fulfill his duty as a Demon Slayer, even in the face of overwhelming and disorienting odds in the Demon Slayer manga.