Asakawa joined J3 League club YSCC Yokohama in 2018. Although he did not participate in official matches in the first year, he became a key player in the second year with a change of manager, and finished the season with 13 goals in 32 games.
Roasso Kumamoto
On 12 December 2019, he completed a transfer to Roasso Kumamoto. In the 2020 season, there were not many appearances in the starting line-up, but he managed to score 11 goals. On 6 December 2021, it was announced that he would leave the club due to the expiration of his contract after two years at Kumamoto.[2]
Nara Club
On 18 January 2022, it was announced that Asakawa officially transferred to JFL club Nara Club for the 2022 season.[3] On 5 November of the same year, Asakawa led his club to promotion to the J3 League for the first time in their history after defeating Veertien Mie narrowly 1-0. 15 days later, Asakawa led his club to win the 2022 JFL season for the first time in history and was the top scorer with 16 goals in 27 matches. On 6 December, Asakawa won the award as Player of the Year in 2022 as well as named in the Best XI in the JFL Awards.[4] At the end of the season, Asakawa renewed his contract with the club for the 2023 season.[5]