After graduating from University of Tsukuba in 2015, Nishikawa went for trial around Europe and signed for Montenegrin Second League club Kom in January 2016.
After impressing for Kom, Nishikawa subsequently oin Montenegrin First League side Rudar Pljevlja on 19 January 2017.
[2] After not playing football professionally for two years, Nishikawa moved to Southeast Asia to joined Singapore Premier League club Tanjong Pagar United on 18 February 2020 earning at a report of $SGD 3,000 per month.
During the league match against Young Lions during the 2022 season on 1 October 2022, Nishikawa recorded a hat-trick of assists in a 8–1 thrashing win.
On 26 January during a league match against DPMM, he surpassed Asraf Rashid to become the club all-time record appearance.