2021 Japan Curling Championships

On the men's side, Consadole won their third consecutive and overall national championship.^[4] Through the round robin, the team, represented by Yuta Matsumura, Tetsuro Shimizu, Yasumasa Tanida, Shinya Abe and Kosuke Aita, finished in second place with a 5–1 record. They ranked behind the Tokoro Junior team led by Takumi Maeda, who were the surprise of the event. SC Karuizawa Club (Tsuyoshi Yamaguchi) and TM Karuizawa (Yusuke Morozumi) also qualified for the playoffs, each going 4–2 in the round robin. In the 1 vs. 2 page playoff, Consadole took one in an extra end to edge Tokoro Junior 9–8 while TM Karuizawa stole one in the tenth end to eliminate SC Karuizawa Club 5–4. In the semifinal, Tokoro Junior scored four points in the second end and stole three ends en route to an 8–5 victory over TM Karuizawa. Experience prevailed in the gold medal game as Consadole took three in the eighth end and stole a single in the ninth to hold off Tokoro Junior 9–7 and win their third consecutive national title. Since this edition of Consadole formed in 2018, the team has had many successes such as a silver medal at the 2019 Pacific-Asia Curling Championships and a fourth-place finish at the 2019 World Men's Curling Championship.

The women's event saw Hokkaido Bank, skipped by Sayaka Yoshimura, win their second national championship with the first coming in 2015 under skip Ayumi Ogasawara. The Hokkaido Bank team of Yoshimura, Kaho Onodera, Anna Ohmiya, Yumie Funayama and Ayami Ito finished 5–1 through the round robin in second place, trailing defending national champions Loco Solare (Satsuki Fujisawa) who finished a perfect 6–0. Chubu Electric Power (Seina Nakajima) went 4–2 while the playoff picture was rounded out by Fujikyu (Tori Koana) at 3–3. Loco Solare continued their dominant play into the playoffs while they downed Hokkaido Bank 9–4 in the 1 vs. 2 game while Chubu Electric bounced Fujikyu 7–4. Team Yoshimura rebounded in the semifinal game, defeating Chubu Electric 8–2 to advance to the gold medal game. Hokkaido Bank stole two in the third end of the final to lead 3–1 but Loco Solare quickly wrestled the lead back to go up 5–4 after six. After trading singles in ends eight and nine, Team Fujisawa led 6–5 heading into the tenth end. There, Hokkaido Bank scored two points to win 7–6 and claim the national title. Since Ogasawara retired from competitive curling in 2018, the Hokkaido Bank rink won two consecutive bronze medals in 2019 and 2020. The current team found notable success at the 2019 Masters Grand Slam of Curling event where, after entering the event seeded twelfth out of fifteen teams, they reached the final before losing to Tracy Fleury.