Japan captain Makoto Hasebe believes Tuesday's opponents Australia represent a "completely different animal" after the Samurai Blue opened their final round of 2014 World Cup qualifying with two comfortable home wins.
Alberto Zaccheroni's side easily accounted for Oman and Jordan 3-0 and 6-0 respectively in their opening two fixtures at home, but now face the difficult trip to face Australia in Brisbane on Tuesday.
The Socceroos, who lost to Japan in the 2011 Asian Cup final almost 18 months ago, started their final round campaign with an unconvincing 0-0 draw away to Oman with some pundits claiming they are a team in decline but Hasebe insisted his side couldn't afford to take their opponents lightly.
"This game will be a completely different animal to the first two games. We're definitely on a roll with the two wins, but we need to forget about it and regroup for the next one," Hasebe told reporters.
"Complacency comes from the mind so we can't let up mentally. We need to brace ourselves for something totally different."
The Wolfsburg midfielder added that despite the Socceroos having an ageing squad, they still possessed plenty of talent and would play with pride.
"One thing is certain: they'll play with the pride of having carried the team for as long as they have," he said.