Kiwi pundits have given Japan its flowers after a surprisingly tight test match in Tokyo.

The Japanese team has been on a steady upward trajectory over the past decade. 

A famous victory over South Africa in the 2015 World Cup made way for the signing of head coach Jamie Joseph, who since 2016, has overseen further historic wins against Ireland, Scotland, Italy and Wales.

The growth of the Brave Blossoms was illustrated perfectly following Saturday's match with a graphic displaying the final scores of all five of the tests now played between the two nations and the steady decline in winning margin for the All Blacks - from the 129-point victory at the 1995 World Cup to this weekend's seven points.

Sky's The Breakdown panel discussed how the Japanese side has reached these new heights, citing increased quality in their local competition, tactics around physicality and coaching as the big drivers of the success.

"I watched highlights of previous games, where we did pump Japan," Ex-Black Fern Chelsea Semple said. "And they're just completely different athletes now.

"They've obviously got a lot of New Zealand rugby players or overseas internationals coming to play in their competition, their training's ramped up, they're physical beasts out on the field some of them - and that's a big shift they've made, which is why they're able to compete physically with the All Blacks now."

Mils Muiliana agreed the growth of the local competition has had a prosperous impact on the national team.

"The game's changed over there now," said the ex-All Black. "It's changed from behind the scenes. The companies have got really behind the Rugby Union, they've invested a lot of resource into that and it's starting to rub off. 

"Even the Sunwolves being a part of Super Rugby, some of the experience that those players have had. We've seen it already with the Highlanders, they've come over and they've gone back.

"Them working together with the companies to get foreigners to come and sort of share some of their knowledge, that's starting to rub off, and I think it's evident of where the players have got to now. They understand the physical nature of it, they're standing up and the training's a little bit different."

Muliaina also was full of praise for Japan's defense.

"The Japanese (were) outstanding, their defense was huge," Muliaina said. "It just felt like they (the All Blacks) were waiting for things to happen, just stick to that plan, stick to that plan, Japan will falter, they'll start to fall off tackles... and it never happened.

"Usually, they would start to fall off, and then you start to win momentum. We won a little bit of momentum, but then they got it back and scored an excellent try. They were back in the game, so this Japanese side can easily go - well they've done it, they've beaten tier one teams, so they're certainly capable of doing that."

Taylah Johnson complimented Japan's attack and the impact of ex-Highlanders head coach Tony Brown.

"Yeah, we also need to give credit to the coaching staff of Jamie Joseph and Tony Brown," Johnson said. "Yes, you can have the cattle, but what you're doing with them is really important as well.

"You can see Tony Brown all over the lineout moves, the set piece moves as well. They were always trying something different. They were changing pictures for that All Black team, and it made it hard to defend.

"They're not playing the simple rugby that they used to play. They're always doing something different, and it was really hard for the team to read defensively."

Mils Muliaina then looked ahead to the Brave Blossom's upcoming Northern Tour schedule, with the next test coming against England, followed by France.

"They now go to England, which is a tough place to go and play, Twickenham," Muliaina said. "It's another stepping stone in terms of their plan. They're going to have that same challenge when they go to England, if not even harder, because those guys there are probably a lot more physical than probably what the All Blacks are in terms of the size in that team.

"So, he (Tony Brown) knows what the challenge is, but also what I love about what Browny's saying is the plan that they've got in place leading into Rugby World Cup."