Bullfighting Capital of Japan

Uruma City is the bullfighting capital of Japan, and it's the immediate eastern neighbor of Okinawa City. We work in Uruma City, which is where I saw this manhole cover:

Then, on the way to Ike Island (also part of the Uruma City district), I saw this man brushing his huge bull on the side of the highway:
He's going to be fighting on the 31st of March.
But the bull fights are a little different here, instead of being killed my matadors, they buck-up against other bulls, maybe like sumo wrestlers? They try to knock each other out of the ring, I guess. I'll be sure to fill you in!