Japan scored a brilliant goal in the 21st minute when Yuki Ogimi volleyed in a great ball from the right side and had another couple of decent chances, but New Zealand looked composed throughout and caused the world's No3-ranked side problems.
The result came on the back of their 1-1 draw with Australia on Sunday (Australia won the penalty shootout to claim the inaugural Centenary Cup), which means the 20th-ranked Kiwis have achieved draws against two top-10 nations in the past week.
They might reflect, however, on the fact that they might have beaten both sides. They have never beaten a Japan or a top-10 side since Fifa started publishing the rankings and this match represented a golden chance.
Coach Tony Readings is trying to turn the Football Ferns into a side who value possession and pass the ball around as they look to the 2015 World Cup and 2016 Olympics. They have been doing that effectively and looked more dangerous against Japan than they did against Australia.
Hannah Wilkinson volleyed against the crossbar after a piece of individual skill early in the second half, Ria Percival delivered a handful of teasing balls into the box and strikers Sarah Gregorius and Amber Hearn had half-chances before Longo latched onto a late Percival cut-back.
The Football Ferns are due to play Switzerland in two matches in September before taking on the world's top-ranked side in the US in October.