10,000 Japanese men rubbing themselves naked (and the invitation to the first 40 women in 1,250 years so the party doesn't die). Sweat trickles down their naked bodies despite the cold.

They shout, bless and push each other. They drink shots of sake to warm up. The weakest fall into the mud. Some, clinging to the backs of the plump ones, manage to climb until they stick their heads above the sea of ​​ 10,000 men who rub their bodies to shake off bad luck.