Striker Yuya Osako netted a second-half brace as Japan advanced to the Asian Cup final with a 3-0 win over Iran on Monday.
The Werder Bremen forward made an emphatic return to the starting lineup at Hazza Bin Zayed Stadium, scoring in open play before netting a second from the penalty spot.
Winger Genki Haraguchi hit Japan's third in time added as the four-time champions finally displayed their attacking potential after reaching the semifinal in less-than-convincing fashion.