Sumo

Sumo began as Shinto ritual — bouts offered to the gods for a good harvest — and the ritual never left. The canopy over the ring is a shrine roof. The salt the wrestlers throw is purification. The referee wears court dress from a thousand years ago and carries a war fan.

The calendar, which never moves

There are exactly six grand tournaments a year, each fifteen days: January, May and September in Tokyo at the Ryogoku Kokugikan, March in Osaka, July in Nagoya, November in Fukuoka. They begin and end on a Sunday.

This matters for a cruise because the Tokyo tournaments are the ones you can reach, and because outside those forty-five days there is no professional sumo in this city at all.

What a day actually looks like

The building opens in the morning with the lowest divisions and works upward. Almost nobody arrives then, and that is a mistake — the lower divisions are where you can see the whole hall, sit anywhere, and watch young wrestlers who have everything to lose.

The top division, makuuchi, appears in the late afternoon. Its wrestlers enter in ceremonial aprons, the ring is swept, and the crowd arrives all at once. The final bout is around six.

Each bout lasts a few seconds. The staring, the salt and the crouching that precede it can run four minutes. That ratio is the sport: the tension is the event, and the collision resolves it.

The ring is 4.55 metres across, made of clay, edged with rice-straw bales, and rebuilt by hand for every tournament. Step out or touch down with anything but your feet, and you have lost.

Tickets

Masu-seki are the boxes on the floor — four cushions inside a low frame, shoes off, knees folded. They are the classic experience and they are hard on Western knees for four hours. Arena chairs upstairs are ordinary seats with a full view and are the sensible choice for most visitors over fifty.

A limited number of same-day general admission seats go on sale at the box office in the morning, one per person, and they sell out on popular days. Advance tickets go on sale roughly a month before each tournament and the best days go quickly.

When there is no tournament

Ryogoku is still a sumo town. The Sumo Museum inside the Kokugikan is free. Several restaurants around the station are run by retired wrestlers and serve chanko-nabe, the enormous protein-dense hotpot the stables eat daily — it is genuinely good food, not a novelty.

Morning practice at a stable can sometimes be observed, but only by arrangement, with a Japanese-speaking intermediary, and under strict rules of silence and stillness. Do not turn up at a door.