"I like the heat so I was kind of sad about that..." She scorched the court further with 56 winners, often going down on one knee to generate enormous power to leave former world number one Pliskova stranded.
The 23-time women's singles Grand Slam champion was leading 5-1 in the third set and serving at 40-30, and it is certain that there was no one that would have claimed that she could lose the match.
" Yeah, I mean, of course that's a very big deal for me". "I tried to regroup in the third set".
A close call on match point nearly tripped Osaka at the finish line after her ace was deemed out by the linesperson. "I didn't know if I was gonna play tennis again". She then broke to take a 2-1 lead when Pliskova came up short on a backhand.
A stunning sequence saw Osaka save three break points in her opening service game of the final set before breaking Pliskova to love.
She fired 56 winners past Pliskova, who had previously eliminated Serena Williams in the last eight.
"I'm not upset with myself that I lost. I have nothing but the utmost respect for them", he said.
On an oven-hot day at Melbourne Park, the eighth-seeded Kvitova extended her winning streak to 11 matches when she ended the challenge of unseeded American Danielle Collins 7-6 (7-2), 6-0 in the semifinals.
Firstly, Kvitova's data from this year's Australian Open in isolation is better - she's running at nearly 120% combined serve/return points won, which are stunning numbers, even for a finalist.
Serena Williams has crashed out of the Australian Open at the quarterfinal stage after a 4-6, 6-4, 5-7 defeat to seventh seed Karoline Pliskova of the Czech Republic.
Osaka is due to play Petra Kvitova in the final on Saturday. Not just physically, but mentally too it was very tough. "I always play everyone at their greatest, so I have to be greater". "Just went insane", Williams said.
The two-time Wimbledon champion also revealed she received support from Monica Seles, the former Grand Slam star who was stabbed on court by a crazed fan during a match in 1993.
She also had a dig at those who believed she would never again hit the heights she enjoyed before her life was turned upside down. The Japanese served 15 aces as opposed to just three from the Czech.
"I was happier than the fans that the roof closed", she said afterward. It was tough. Maybe there were a couple of that would have been different.
That run includes eight consecutive victories in finals, with an incredible ninth on offer when she plays Osaka this weekend.
When we were out here last time, you said you had been walking in Melbourne.
"I know that the season is longer".
It's hard to decide whose feel-good story rates higher on the goose-bumps meter ahead of their showdown.