WK SA Spoiler Alert: This page contains spoilers. Read at your own risk.

The Juumonji (十文字) Family is one of the Ten Master Clans, bearing the number Ten (十) ​in their name. The current Head of the Juumonji Family is Juumonji Katsuto. The previous Head of the Juumonji Family was Juumonji Kazuki. He stepped down during the Selection Meeting of AD 2097.

The Juumonji Families ability to wield multiple types of Area of Effect defensive magic has earned them the title "Stonewall". [1]


They are part of Ten Master Clans, and are from the Tenth Institute, where the research focus was, "Wide-Area Magic that Generates Virtual Structures in Space as a Defensive Countermeasure to Heavy firepower". [2]

Notable from the Juumonji Family is "Phalanx", a multi-layered defensive magic and is considered to be practically another name for the Juumonji Family. [1]

The Juumonji Family is said to be not adept at gathering intelligence according to Katsuto. However, Saegusa Kouichi has complimented Katsuto's investigation on Anti-Magician media inciters to be very thorough. [3]

Business Ventures

Kazuki, the former Head of the Juumonji Family is the owner of a Civil Engineering & Construction Company that contracts work with the Defense Forces. [4]

Main House

The Juumonji reside in Kantō, Tokyo. [4]

Area of Influence

The Juumonji and Saegusa Family's influence encompasses specifically the Kantō region and all of Izu. During the Master Clans Conference held every four years, the Heads of both families give a report on the status of the regions they monitor. [4]

The Juumonji Family's power surrounds the capital and can act regardless of jurisdiction. The Juumonji family is one of the three most influential families in the Ten Master Clans, besides the Yotsuba. [5]

It was mentioned that ordinarily the police would not have even been considered to be involved in incidents that involve the heir of the Juumonji Family. [6]


Published Data on the Juumonji Family shows that the Family's other members are a second son —— a Junior High Sophomore, a third son —— a Junior High Freshmen, and a daughter —— an Elementary School Fifth Year. [7]

  • Children :
    • Oldest Son : Juumonji Katsuto (Clan Head)
    • Second Son - Junior High School, Eighth Year
    • Third Son - Junior High School, Seventh Year
    • Daughter - Elementary School, Fifth Year

Magic Abilities

Members of the Juumonji Family are specifically the only known individuals to lose their ability to use magic from a disease. [4]


  1. 1.0 1.1 Volume 3, Chapter 6
  2. Volume 13, The Ten Magician R&D Institutes
  3. Volume 12, Chapter 10
  4. 4.0 4.1 4.2 4.3 Volume 17, Chapter 5
  5. Volume 11, Chapter 15
  6. Volume 2, Chapter 12
  7. Volume 18, Chapter 7

Pages in category "Juumonji"

The following 3 pages are in this category, out of 3 total.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.