Mao Shimada broke a record set by the athlete after whom she was named, 2010 Olympic figure skating silver medalist and three-time world champion Mao Asada, in winning the women's junior figure skating world title Friday.
She became the youngest Japanese winner in the history of the junior world championships at 14 years and four months, beating Asada's 2005 record by one month.
Shimada scored a total of 224.54 points, placing first in both Wednesday's short program and Friday's free skate in Calgary.
South Korea's Shin Jia finished second with 201.90, and Ami Nakai rounded out the podium with 197.40.
"Mao Asada is the origin of my name, and she is my idol," said Shimada, who landed a triple axel — Asada's trademark jump — in the free skate. "I'm happy to have won this title like her. I'm surprised I was able to break her record. I did my best by believing in what I've been doing in training."
Asada won the 2005 Grand Prix Final at age 15 but was not old enough to compete at the 2006 Turin Olympics.
On Saturday, 17-year-old Kao Miura cruised to the men's title, completing Japan's first sweep of the men's and women's titles since 2010, when Yuzuru Hanyu and Kanako Murakami won their respective junior world titles for Japan.
Leading after the short program, Miura landed all three of his quad jumps as he also topped the free skate, scoring 179.63 for a 264.74 total.
Miura became the sixth men's junior world champion from Japan and the first since Shoma Uno in 2015.
Nozomu Yoshioka came third on 217.79 as Japan's number of men's berths for next season's junior world championship rose to three.
Naoki Rossi of Switzerland, whose mother is Japanese, was second on 220.68.