Japan coach Takeshi Okada has warned the Netherlands that his side will not be timid when the two teams meet in their World Cup Group E action on Saturday.

"We now have a Japanese style of playing although it doesn't mean that in terms of technique or skills, there has been an improvement. But we have been focusing on our strategy to beat the world-class teams," he told Fifa.com.

"We realise this is a sophisticated team but we believe we have a chance to win tomorrow. We shouldn't feel small even though Holland have big name players in the team. We want to address this challenge with the overall power of this team."

Japan opened their World Cup campaign with a 1-0 victory over Cameroon on Monday and Okada is confident his side can build on their momentum and that his players are focused on the task at hand.

"That win has given us a big boost in confidence," he said. "The players are focusing on playing with the same determination tomorrow."