Tokyo - Ireland overpowered Japan 35-13 on Saturday to finish with a perfect record in their three-game summer tour.
Joe Schmidt's second-string side looked on course to rack up 50 points for the third successive match as they ran in four first-half tries in Tokyo.
The signs were ominous for Japan's "Brave Blossoms" when Gary Ringrose scored under the posts and flanker Josh van der Flier wriggled over in the corner in the first 10 minutes.
Bulldozing tries from Kieran Marmion and stand-in skipper Rhys Ruddock further stretched the lead for Ireland, the bulk of whose regular players are on British and Irish Lions duty in New Zealand.
Japan's sole glimmer of hope had been Kotaro Matsushima's fine try on 24 minutes but after trailing 28-8 at half-time, the 2019 World Cup hosts offered significantly more resistance after the interval.
Akihito Yamada raced clear to score Japan's second try, while Ireland narrowly avoided going scoreless in the second half thanks to Sean Reidy's late effort.
Fly-half Paddy Jackson converted all five tries for Ireland, who crushed Japan 50-22 last weekend and also broke the 50-point mark against the United States in their opening tour game in New Jersey.