Why is Sumo Called “Kakukai”?Uncovering Japan’s National Sport Through Its History and Social Structure

Introduction
               

Supervisor・Tsuyoshi Mizuguchi

He began practicing sumo in sixth grade, later advancing to Hotoku Gakuen High School and Ritsumeikan University before joining the Kasugayama stable to enter professional sumo. After retiring in 2016, he appeared in a popular subscription-based drama series titled Sanctuary. Currently, he runs his own YouTube channel, “Osumo Gucchan-neru,” where he shares videos on sumo training, techniques, and his experiences from his time as a professional wrestler.

The term “Kakukai” refers not only to the wrestling matches themselves but to the entire world of sumo, including wrestlers, referees, announcers, hairdressers, and support staff. By understanding the origin and meaning of this word, fans can gain a deeper appreciation of sumo’s traditions and social structure.

The Meaning and Scope of Kakukai

Kakukai refers to the entire sumo world, and it includes all members of the Japan Sumo Association. This covers not only wrestlers, but also referees who judge matches, yobidashi who announce bouts, tokoyama who dress the wrestlers’ hair, and behind-the-scenes staff such as clerks and facility managers. In other words, Kakukai represents the entire social structure that supports sumo as a cultural tradition, not just the sport itself.

RoleMain DutiesAffiliation
RikishiCompete in the ringSumo stables
GyōjiJudge matches and manage progressJapan Sumo Association
YobidashiAnnounce matches and prepare the ringJapan Sumo Association
TokoyamaStyle wrestlers’ hairSumo stables
Support StaffAdministration, facility managementJapan Sumo Association

Origin and Historical Background of Kakukai

There are several theories about the origin of the term Kakukai, but the most widely accepted is that it comes from shortening the phrase “Kakuryoku (sumō)”, meaning “the world of sumo wrestling.” The kanji “角力” (sumō) has been used for centuries to describe the act of locking horns and testing strength.

During the Edo period, sumo developed both as entertainment for the samurai class and as a pastime for commoners. The term Kakukai came to be widely used to refer collectively to the internal society of sumo. Another theory views sumo as a place where wrestlers compete in all directions, with the “corners” symbolizing the boundaries of a community — hence the “kai” (world). In either case, the word Kakukai is deeply tied to the long history of sumo.


How Kakukai Differs from General Society

Kakukai operates under its own strict rules and customs that differ significantly from mainstream society. Wrestlers’ living arrangements, lifestyle, and income are all heavily influenced by their banzuke (rankings). Etiquette and hierarchy are extremely strict, and these cultural norms permeate daily life.

ItemKakukaiGeneral Society
Status SystemClearly defined by rankingsBy job title or position
LifestyleStable living, training-centeredIndependent housing, varied work
EtiquetteStrict and ceremonialVaries by workplace
PromotionBased on victories and recordsBased on performance reviews

Foreign Wrestlers and Kakukai Culture

In recent years, many foreign wrestlers have thrived in Kakukai. They dedicate themselves to learning Japanese, understanding sumo etiquette, and blending into its traditions, while also showcasing their own strength. However, adapting to differences in lifestyle, food culture, and the intensity of training can be challenging at first. Even so, Kakukai is not a closed world — it continues to evolve by accepting outside influences while preserving its traditions.


Events and Annual Schedule in Kakukai

The sumo calendar revolves around honbasho (official tournaments). There are six tournaments each year, held in traditional host cities. Wrestlers train year-round according to this schedule, focusing on physical conditioning and skill development.

MonthTournamentLocation
JanuaryHatsu Basho (New Year)Tokyo
MarchHaru Basho (Spring)Osaka
MayNatsu Basho (Summer)Tokyo
JulyNagoya BashoNagoya
SeptemberAki Basho (Autumn)Tokyo
NovemberKyūshū BashoFukuoka

Cultural Significance of the Term Kakukai

The term Kakukai is not just an industry name — it is also a symbol of Japanese culture. Sumo is closely tied to Shinto rituals, and the dohyō is considered a sacred space. Before matches, wrestlers scatter salt to purify the ring. Such spiritual and traditional practices are all encompassed within the concept of Kakukai, giving the term a special resonance among sumo fans.


Conclusion

Kakukai represents not only the gathering of wrestlers and sumo personnel but also a living embodiment of Japan’s history, culture, and values. The name carries a sense of cultural and spiritual depth that goes beyond the competition itself. For those new to sumo, understanding the background of Kakukai opens the door to a richer appreciation of the sport and its traditions.

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