Gloucester - Japan coach Eddie Jones said his giant killers are ready to run Scotland "off their feet" in their World Cup clash Wednesday because they are much fitter.
Jones insisted his side, who beat South Africa in the biggest upset in World Cup history on Saturday, are ready to prove the feat was "no fluke."
Scotland
But the Japan master tactician said research had shown the Pool B rivals, who will be playing their first game in the tournament, get all their points in the first half.
Scotland "get outscored consistently in the second half.
"We know we are a fit team. If we can stick with them in the first 30 minutes and stay in the game until half time then we will win the game because we will run them off their feet."
Japan will have only four days between their two matches. But asked if the Brave Blossoms are fitter than Scotland, he answered: "Definitely. Definitely."
Jones has made six changes to the team that started the amazing game in Brighton and beat the two-time world champions 34-32.
"Physically we are pretty good. Obviously there's a few knocks and bruises as you do when you play the Springboks," said the 55-year-old coach.
Mentally, the team are "a little bit tired."
"When you've a played a big game it is always hard to come down. I think their focus is pretty good. We had a pretty good meeting today. Their minds seem to be ok. But we will see tomorrow."
Jones said Japan -- who play in red and white -- will need local support in Gloucester to prove they deserve their new higher standing in the rugby pecking order.
"Gloucester is one of the great spiritual homes of rugby, isn't it? People in Gloucester know their rugby so hopefully we will get a lot of support from the local crowd.
"They normally wear red and white so they can wear red and white tomorrow to support us. And we know the English don't like the Scottish so that's another bonus for us."
Japan have leapfrogged Scotland to take 11th place in the world rankings. But Jones said there would be no favourite when the game starts at Gloucester's 16,500 capacity Kingsholm stadium.
"People still think it was a fluke that we beat South Africa. So this is a great chance for us to show that it wasn't and we can really front up as a serious rugby nation."
The Australian, who will leave the Japan post after the World Cup for South African Super Rugby franchise Western Stormers, said "significant" pressure is now on Scotland because they are "one of the most established rugby countries in the world."
With their Springbok win churning up a groundswell of emotional support for Japan, there will be international attention on Wednesday's game.