Shinji Okazaki and Keisuke Honda struck in the second half to give Japan coach Vahid Halilhodzic a 2-0 win over Tunisia in his debut on Friday.
Shinji Kagawa featured in both goals as Japan took its first step under the Bosnian, whose men will host Uzbekistan in Tokyo on Tuesday.
Just as he said he would the night before, Halilhodzic walked the talk by giving Japan a vastly different look from the team that played for his predecessor Javier Aguirre at the Asian Cup in January.