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. He make his professional debut on 14 August 2016 where he also scored his first professional goal in a 2–1 lost against Radnički Berane.
Rudar Pljevlja
After impressing for Kom, Nishikawa subsequently oin Montenegrin First League side Rudar Pljevlja on 19 January 2017. He make his debut for the club on 26 February in a league match against Dečić. [1]
Petrovac
Nishikawa then joined another Montenegrin First League club Petrovac in August 2017. He make his debut on 5 August in a league match against Grbalj. He was release from the club a year later.
After leaving Europe, he went on trial with Indonesia club, Madura United in 2019 however, he failed to win the contract.
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Tanjong Pagar United
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. He make his first appearance for the club on 6 March in a league match against Lion City Sailors. He then scored his first goal for the club in a 2–2 draw against Albirex Niigata (S) on 20 March.
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. After spending three seasons at the club, he has recorded 10 goals and 18 assists in 64 appearances across all competition, he leave the club at the end of the season.
Angkor Tiger
On 15 February 2023. Nishikawa joined Cambodian Premier League club Angkor Tiger where he is joined by compatriot Takuto Yasuoka, Shuto Asano and Taiga Kitajima. He make his debut for the club on 6 August in a 1–0 lost against ISI Dangkor Senchey. Nishikawa then scored his first goal for the club against the same opponent but on home ground in a 2–1 win on 5 November. He captained the club on 25 February 2024 in a 2–1 win against Tiffy Army.
Returned to Tanjong Pagar United
On 22 May 2024, Nishikawa returned to his former club Tanjong Pagar United in preparation for the 2024–25 season.
Personal life
Nishikawa met his Singaporean Malay wife Fareha through social media platform in 2021 and the pair got married in 2022 after Nishikawa had converted to Islam. He has stated that he attended religious classes online to learn more about the religion and struggled when he first started fasting during Ramadan.
