- 71. Operation: Entertainment District
- 72. Search For My Wives
- 73. The Chase
- 74. Daki
- 75. Various Feelings
- 76. In Various Places
- 77. Roar
- 78. Wriggly
- 79. Air Hole
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 Gotōge, Volume 9
- Tanjiro - The brothel hostess becomes infuriated after discovering that Tanjiro has a huge scar on his forehead. The man tries to calm her down and convince her that Tanjiro might still attract customers.
- Inosuke - Inosuke changed quickly so that no one could discover that he was a boy, but he had a lot of spare time afterwards and began stretching. One of the staff of the brothel walks in on him stunned to see his flexible body.
- Tanjiro 2 - Tanjiro tries to appeal to the hostess by quickly completing all the chores hes given, stunning her with his diligence.
- Koinatsu - Koinatsu is very kind and spoils everyone to the point where the hostess gets mad at her sometimes.
- Young Girls - The girls begin to worry about Zenitsu after he is thrown from Warabihime's room.
- Hand - A mouse is seen squeaking as it dangles from Daki's hand.
- Kozo and Hotaru - Hotaru sneezes and Kozo asks if he's sick
- Inosuke 2 - Inosuke is contemplating on how to defeat the maggot (obi) and thinks of urinating on it. The author advises for him not to urinate on it.
Kimetsu Academy Tales
- Art Teacher: Tengen - He is referred to as "Buddy-Sensei" by his students and is infamous for calling art "explosions". At one point, he blew up the art room with explosives. In high school, he was a delinquent boss and was known for his fighting skills.
- School Store Employee: Suma - She is called a "kunoichi" by the male students, and always gives back the wrong change.
- Cafeteria Employee: Hinatsuru - She is called a "kunoichi" by the male students, and has a "God's Tongue" for her good cooking skills.
- Cafeteria Employee: Makio - She is called a "kunoichi" by the male students, and is known for having a loud, persistent, and short tempered personality.
- Perverted Nerd: Enmu Tami - He has a weird fascination with trains and delays them. He also is hated by other members of the community, and takes photos of the trains using a stolen camera.
- Dojo Instructor: Shinjuro - He has been discouraged after losing pupil after pupil.
- 1st Year Middle School Student: Senjuro - He's an average boy who loves to read.
- Calligraphy Teacher: Ruka - She has weak facial expressions so people have been concerned about her.