Furukawa went to Arita Technical High School, and when he was in his third year, the school participated in the Japanese High School Baseball Championship for the first time in 114 years since its founding, winning the school's first game.[2]
In 2015 season, He injured his right shoulder in spring training and spent the season rehabbing the effects.[5]
In 2016 season, he pitched in 6 game in the Pacific League.
In the 2017 season, Furukawa pitched as a starting pitcher, and on October 5, against the Chiba Lotte Marines, he recorded a complete game, although he did not win.[6]
On June 5, 2018, in an interleague play against the Yomiuri Giants, Furukawa became a winning pitcher for the first time in his fifth season since the start of his career.[7] And he finished the regular season with a 18 Games pitched, a 4–9 Win–loss record, a 4.13 ERA, a 77 strikeouts in 98 innings.
In 2019 season, He finished the regular season with a 11 Games pitched, a 2–3 Win–loss record, a 6.44 ERA, a 41 strikeouts in 43.1 innings for both teams combined.
In 2020-2021 season, he pitched only 5 games in the Central League.
On November 28, 2021, the Giants announced the release of Furukawa.[9]
In 2022 season, he finished the regular season with a 34 Games pitched, a 0–1 Win–loss record, a 3 holds, a 4.08 ERA, a 32 strikeouts in 35.1 innings as a relief pitcher.
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