The fourth seed took just 63 minutes to complete a clinical 6-4, 6-4 victory over the newly crowned US Open champion in Tokyo, bringing Osaka's 10-match winning streak to a shuddering halt.
"I think [my serve] got me out of a lot of trouble today", Osaka said afterwards.
"I didn't want to try to overpower her because I think she has more power than me", the 26-year-old added. She was playing really well and I felt like I was just trying to survive.
The reigning US Open champion, Naomi Osaka refuses to put a break on her acceleration of winning titles.
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Fittingly, Pliskova wrapped up the match in the same way Osaka had started it - with an ace - to take victory.
During the final in Tokyo, the strain was beginning to show on a dejected Osaka when she called for coach Sascha Bajin and groaned: "I feel so stressed out!".
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The pin-straight style complemented her voluminous, ruffled navy blue Oscar de la Renta belted top and black Altuzarra pants . Harry and Meghan made sure to get amongst the action, showing off their competitive sides.
"I haven't really had much time to rest, so I feel exhausted right now", said Osaka in Tokyo, confessing that she needed a break having won 10 matches in a row including her triumph at the US Open title before her streak came to a shuddering halt.
Prior to the final, Pliskova had spent 419 minutes on court, more than any other player and nearly twice as long as Osaka, but the Japanese player soon wilted and was unable to match the brilliance that secured her a first Grand Slam title.
"It was important for me to play just two sets and not go to a third one".
"Because if you set a really high goal, than normally, for me at least, I tend to overwhelm myself. She was missing quite a lot today and it was working, so I didn't change anything". Within hours of her 6-4, 6-4 defeat in Tokyo, Wuhan Open organisers said on Twitter she withdrew from their tournament, citing a "viral illness".
So, the last player to win the Tokyo title without conceding a set remains Agnieszka Radwanska in 2015. Then the Swiss seemed to suddenly lose his nerve, making a catalogue of unforced errors to allowing the Slovak to break to love. However, Wozniacki broke back and went on to take the first set 7-5.
In the deciding set, Klizan broke in the third game.
In Sunday's final, Klizan will face the victor of the semi-final between top-seeded Austrian Dominic Thiem and fifth-seeded Spaniard Roberto Bautista Agut.