Germans cannot afford any slip-up against the Japanese and risk a potential early exit again.
Germany will decide on the eve of their Euro 2016 round of 16 match against Slovakia on Sunday whether defender Jerome Boateng can help them to another clean sheet en route to what they hope is their fourth continental crown.
Germany coach Joachim Loew is confident key centre back Jerome Boateng will be fit for his side's last-16 encounter despite coming off with a calf problem during Tuesday's 1-0 victory over Northern Ireland.
"Will Germany be more dangerous because they need the win more? You never know in football," Luis Enrique said.
The responsibility for peace in Ukraine now rests in the hands of the two principal belligerents, Russia and the US, and the prime victim of this great power rivalry, Ukraine, points out Nitin Desai.