Ancient Origins: Sumo as Shinto Ritual
The History of Sumo Wrestling
Chapter 2 · Ancient Origins: Sumo as Shinto Ritual
A Rite Bound to the Harvest
Before sumo was anything resembling a sport, it was performed as an offering to Shinto deities — entertainment staged to please the gods and, in return, secure a good harvest and divine protection. Wrestling of this kind sat inside a much broader Japanese tradition of tying physical performance directly to the agricultural calendar: rice-planting festivals, harvest rites, and New Year divination ceremonies that still survive at shrines across Japan today.
At Suwa Taisha in Nagano Prefecture, a divination rite called tsutsugayu shinji — the "cylinder-gruel rite" — is still held every 15 January. Hollow reeds or bamboo tubes, one for each coming month, are boiled together in rice gruel; the following morning, the tubes are cut open, and the amount of rice stuck inside each one is read as a forecast of that month's own harvest. This is not sumo itself, but it is exactly the kind of ritual world sumo grew up inside — physical performance and ceremony used to divine, and to influence, the year's crop.
Read against that backdrop, sumo's own earliest form was not a contest of two individuals so much as a performance directed outward — toward the gods, and toward the harvest their favour was believed to determine.
The Legendary Founding Match: Nomi no Sukune vs. Taima no Kehaya
Sumo's own foundational story is recorded in the Nihon Shoki, Japan's second-oldest chronicle, compiled by a committee of court scholars in 720 CE. According to the account, in 23 BCE — during the traditional reign of Emperor Suinin — a man named Taima no Kehaya boasted that no one in the land could match his strength. The emperor summoned a renowned strongman from Izumo province, Nomi no Sukune, to answer the challenge.
Nomi no Sukune kicked Taima no Kehaya in the ribs, breaking them, then stamped on his lower back — killing him on the spot.
The Nihon Shoki itself treats this as the founding contest of what would become sumo — the earliest written record of the practice in Japan.
Nomi no Sukune went on to be remembered as sumo's own ancestral figure, and as the founder of the Haji clan, a lineage later associated with funerary and ceremonial roles at court.
It is worth noticing what this founding story actually depicts: not a formalised bout with rules and a winner declared by points, but a real fight to the death, staged at an emperor's own command to settle a boast. Whatever sumo eventually became, its own foundational story is a story about lethal violence, not sport.
The Nihon Shoki was compiled in 720 CE, and its companion text the Kojiki in 712 CE — both roughly seven centuries after the events they describe reaching this far back. Historians treat the chronicles' own earliest layers with real caution: the texts make no sharp distinction between myth and history, and their own central purpose was establishing an unbroken imperial line back to the sun goddess Amaterasu, not producing an objective historical record. The Nihon Shoki is generally considered more reliable the closer it gets to the scholars' own present day — which means a dated 23 BCE wrestling match, recorded seven hundred years later inside a text built to serve dynastic legitimacy, is a legend with a real cultural function, not a verified historical event.
Why the Legend Still Matters
None of that historical caution erases the legend's own real weight. Sumo institutions today still treat Nomi no Sukune as the sport's own ancestral founder, and shrines dedicated to him remain sites of real reverence within the sumo world. The story functions the way founding myths generally do — not as a claim a modern historian should accept at face value, but as the origin story a living tradition has chosen to tell about itself, and continues to tell.
Looking Ahead
Chapter 3 follows sumo out of legend and into the real, documented record of the Nara and Heian imperial courts, where it became a formal annual court ceremony — the point at which sumo's own history starts resting on firmer ground than a single founding myth.
Questions to Sit With
Sumo's own foundational story is a fight to the death, not a sporting contest. What does it suggest about a tradition's own self-understanding that its origin myth is so much more violent than its modern practice?
The Nihon Shoki was compiled specifically to legitimise an imperial line, seven centuries after the events its earliest chapters describe. Does knowing a text's own political purpose change how you'd read a legend it records, even one as specific and dated as this?
Sumo began as a rite performed for the gods, tied to the harvest. Chapter 1 already showed that framing never fully disappeared. At what point, across the chapters ahead, do you expect sumo to have stopped being primarily a religious act and started being primarily a sport?
Quick Reference — Chapter 2
- Early sumo was performed as an offering to Shinto deities, tied directly to the agricultural calendar and the hope of a good harvest
- A real, still-practised parallel: Suwa Taisha's tsutsugayu shinji rice-gruel divination rite, held every 15 January
- Sumo's founding legend: Nomi no Sukune vs. Taima no Kehaya, recorded in the Nihon Shoki (compiled 720 CE) as occurring in 23 BCE under Emperor Suinin — a fight to the death, not a bout
- Nomi no Sukune is remembered as sumo's ancestral founder and as founder of the Haji clan
- A real, sourced caution: the Nihon Shoki and Kojiki were compiled roughly 700 years after this event, blend myth and history freely in their earliest layers, and were built primarily to legitimise the imperial line — the match is a founding legend, not a verified historical record