- 71. Operation: Entertainment District (遊郭潜入大作戦 Yūkaku Sen'nyū Dai Sakusen?)
- 72. Search For My Wives (お嫁さんを探せ Oyomesan o Sagase?)
- 73. The Chase (追跡 Tsuiseki?)
- 74. Daki (堕姫 Daki?)
- 75. Various Feelings (それぞれの思い Sorezore no Omoi?)
- 76. In Various Places (それぞれの場所で Sorezore no Basho de?)
- 77. Roar (轟く Todoroku?)
- 78. Wriggly (ぐねぐね Gunegune?)
- 79. Air Hole (風穴 Kazāna?)
In Taisho-era Japan, kindhearted Tanjiro Kamado makes a living selling charcoal. But his peaceful life is shattered when a demon slaughters his entire family. His little sister Nezuko is the only survivor, but she has been transformed into a demon herself! Tanjiro sets out on a dangerous journey to find a way to return his sister to normal and destroy the demon who ruined his life.
Tanjiro and his friends accompany the Hashira Tengen Uzui to an entertainment district where Tengen's female ninja agents were gathering information on a demon before they suddenly disappeared. In order to investigate, Tanjiro and the others disguise themselves as women to sneak in! As they close in on their target, the demon reaches out for the courtesans of the district!
|“||Hello! I'm Gotouge. Volume 9 is out. Thank you very much to everyone who helps me and cheers me on. If no one read the manga, it would just be a pile of paper, so for people to take it in their hands and open it up is a great honor. I hope for your happiness as I fire the cannon of gratefulness! I always pray for the good fortune of everyone who is kind to this author whose glasses are always askew.||”|
—Koyoharu Gotoge, Volume 9