Manchester United star Shinji Kagawa is determined to breathe life into Japan's World Cup campaign with victory over Greece on Thursday night.
The Reds schemer was disappointed with his own performance in the 2-1 loss to Ivory Coast at the weekend but remains hopeful his country can progress from a group that also includes Colombia.
"We have to win," said Kagawa. "That's all I can say. We have prepared for it over the past several days. All I can say is we will win. We need to achieve the result."
The 25-year-old insists the players can pick themselves up after the disappointing defeat in Recife.
"We just finished one match," he stressed. "I would ask: 'What have we been doing for the last four years?' if we get discouraged already [after only one game]. I will shift my mind and do my best on Thursday."