Shauna Coxsey triumphed again at the second International Federation of Sport Climbing (IFSC) Bouldering World Cup of the season in Kazo.
The Briton, the runner-up in the overall series in both 2014 and 2015, won the women's campaign opener in Meiringen and was similarly impressive as the circuit moved to Japan.
Coxsey led from the beginning and was dominant throughout, with France's Melissa Le Neve, who was also second in Meiringen, again finishing as runner-up.
Nonaka Miho of Japan gave the home fans something to celebrate by clinching the third spot on the podium.
In the men's competition, Kazakhstan's Rustam Gelmanov took top honours with Italian Michael Piccol Ruaz taking silver.
There was another bronze for Japan thanks to Kokoro Fujii.
This podium was completely different to Meiringen with the season looking set to be a competitive one.
The next World Cup will be held in Chongqing in China on April 30 and May 1.
Climbing is one of five sports - along with baseball/softball, karate, skateboarding and surfing - to be recommended for inclusion at the 2020 Olympic Games in Tokyo.
If climbing is selected by the International Olympic Committee at its Session in Rio de Janeiro in August, bouldering and lead and speed combined will be the two disciplines contested.
A total of 40 climbers would take part at the Games.