Demon Slayer Manga Chapter 40

Demon Slayer Chapter 40 uncovers the cause behind the turmoil within the Tsuzumi Mansion, introducing Kyogai, a former demon who manipulates the rooms by striking the drums embedded in his body. As the environment shifts with every beat, Tanjiro is forced to adjust to a disorienting battlefield where walls and floors constantly change position. Building on the tension from Chapter 39, where the strange behavior of the mansion begins to unfold, this chapter presents a unique and dangerous opponent whose ability turns the entire house into a deadly maze.