Akamatsu begin first youth career with Otani Muroran High School in 2009 until 2011. He later entered to college in Kanazawa from 2012.
After graduation in Kanazawa Seiryo University in 2015, Akamatsu begin first professional career with ReinMeer Aomori for 2016 season.[1] He left for the club in 2018 after three years at Aomori expiration contract.[2]
On 26 December 2020, Akamatsu joined to J3 club, Vanraure Hachinohe for 2021 season.[3] He left for the club in 2022 after ended of contract in Hachinohe for two years.
On 26 January 2023, Akamatsu announcement officially transfer to JFL promoted club, Briobecca Urayasu for ahead of 2023 season.[4]