Misato Komatsubara

Komatsubara began learning to skate in 2001.[6] She competed for Japan with Kokoro Mizutani in the 2009–10 and 2010–11 seasons. In 2010, the two received a pair of Junior Grand Prix assignments. They were coached by Nozomi Watanabe in Yokohama, Japan.[7]

During the next two seasons, Komatsubara skated with Kaoru Tsuji. Their partnership ended in 2013. After a pause, she decided to continue skating and resumed training under Rie Arikawa in Okayama.[8]

Komatsubara teamed up with Italy's Andrea Fabbri. The two were coached by Barbara Fusar-Poli in Milan from December 2013.[9] They represented Italy on the senior level. Their international debut came in October 2014 at the Ondrej Nepela Trophy, a Challenger Series (CS) event where they finished 6th. After winning bronze medals at the Santa Claus Cup and Italian Championships, they were sent to the 2015 European Championships in Stockholm, where they placed 23rd. The two ended their season with gold at the Bavarian Open.

In 2015–16, Komatsubara/Fabbri took bronze at the Lombardia Trophy and then appeared at two Challenger Series events, winning silver at the 2015 Ice Challenge. After obtaining another silver medal, at the 2015 Santa Claus Cup, they repeated as national bronze medalists and went on to compete at the 2016 European Championships in Bratislava, where they finished 21st. They were coached by Fusar-Poli and Stefano Caruso in Milan, Italy.[8][6]

Komatsubara and Fabbri ended their partnership in April 2016.[10]

Komatsubara teamed up with Timothy Koleto following a tryout in Milan in April 2016.[2] They decided to train together in Milan under Barbara Fusar-Poli.[9] They received the bronze medal at the 2016–17 Japan Championships in December 2016.

Making their international debut for Japan, Komatsubara/Koleto placed 8th at the CS Lombardia Trophy in September 2017. They finished 10th at their only Grand Prix assignment, the 2017 NHK Trophy. In December, the two won the silver medal at the 2017–18 Japan Championships. They placed 10th at the 2018 Four Continents Championships in late January. In early February, they placed 4th at the 2018 Toruń Cup.

In March 2018, Komatsubara/Koleto announced that they had moved to Montreal, Quebec, Canada, to train under Marie-France Dubreuil, Patrice Lauzon, and Romain Haguenauer.[11] They won bronze at both of their ISU Challenger Series events, the 2018 CS Asian Open Trophy and 2018 CS US International Classic. They then competed at two Grand Prix assignments, placing eighth at the 2018 NHK Trophy and eighth at the 2018 Rostelecom Cup.

Following the Rostelecom Cup, the team moved to train in Japan (coached by Rie Arikawa) in order for Koleto to meet a residency requirement for a future citizenship application.[4] They won their first ice dance title at the 2018-19 Japan Championships in December 2018. They placed ninth at the 2019 Four Continents Championships after placing ninth in both segments. Komatsubara/Koleto represented Japan at their first World Championships, held in Saitama, where they placed twenty-first in the rhythm dance, missing the free dance by one ordinal.

To conclude the season, they participated in the 2019 World Team Trophy as part of Team Japan, which won the silver medal, though Komatsubara/Koleto placed sixth of sixth competitors in each of their segments. Komatsubara served as the Japanese team captain.[12]

Initially scheduled to begin the season at the 2019 CS Autumn Classic International, Komatsubara/Koleto withdrew early in the preseason, as a result of Komatsubara having sustained multiple concussions that necessitated time away from training.[13] They later made their season debut at a different Challenger, the 2019 CS Asian Open, where they finished ninth.[14] On the Grand Prix, they were tenth out of ten teams at the 2019 Cup of China, and then withdrew from the 2019 NHK Trophy.

Returning to competition at the 2019–20 Japan Championships, they won their second consecutive national title.[15][16]