Two-time world champion Evgenia Medvedeva of Russia claimed the NHK Trophy women's title on Saturday, while compatriot Sergei Voronov won the men's championship in the absence of Japanese Olympic and world champion Yuzuru Hanyu.
Medvedeva, who led after the short program, fell while executing her first jump, a triple flip, but made up for it to earn 144.40 points for a total of 224.39 at fourth event of the Grand Prix Series.
Italy's Carolina Kostner, the winner of the 2007 and 2010 competitions, was runner-up with 212.24, followed by Russian Polina Tsurskaya (210.19) in the 12-woman field at Osaka Municipal Central Gymnasium.
Sixth after Friday's short program, Japan's Satoko Miyahara (191.80) had two under-rotated jumps but pulled off a solid performance to claim 126.75 for her routine to finish fifth.
The 19-year-old was making a comeback after about 11 months out of competition due to a stress fracture in her left groin area.
"I think I was able to skate as I had practiced," Miyahara said. "I was able to take the first step. I didn't feel any discomfort or pain."
"From here, I only need to push myself to a higher level, and the scores will follow."
Rika Hongo (187.83) and fellow Japanese Yuna Shiraiwa (171.94) were seventh and eighth, respectively.
Voronov added a first place in Saturday's free skate to his win in Friday's short program to cruise to victory with 271.12 points. American Adam Rippon (261.99) was second, and Israel's Alexei Bychenko (252.07) was third. Japan's Kazuki Tomono (231.93) was sixth, while compatriot Hiroaki Sato was 11th with 199.20.
Hanyu was forced to withdraw from the competition due to an injury suffered when he fell in practice on Thursday.
In the pairs, Chinese Sui Wenjing and Hang Cong maintained their lead from the first day and topped the podium. Ksenia Stolbova and Fefor Klimov of Russia took silver, and compatriots Kristina Astakhova and Alexei Rogonov won bronze.
Japan's Sumire Suto and Francis Boudreau-Audet finished seventh, while Miu Suzaki and Ruicho Kihara were eighth.