Cerezo Osaka signed him as a special designated player in May 2017. He would also be joining the team from the 2018 season. Nagaishi made the bench 20 times for Cerezo Osaka, but didn't make any appearances - his earliest benched league game is against Consadole Sapporo on 9 September 2020.
On 7 January 2019, Nagaishi was announced at Renofa Yamaguchi. He did not make any league appearances during his time, but was named on the bench once against Fagiano Okayama.
On 11 January 2021, Nagaishi was announced at Avispa Fukuoka. He made the bench 18 times for Avispa Fukuoka, but didn't make any appearances - his earliest benched league game is against Yokohama F. Marinos.
Avispa Fukuoka
On 17 December 2021, Nagaishi was announced at Avispa Fukuoka on a permanent transfer. He made his league debut against FC Tokyo on 2 July 2022. In 2023, Naigaishi was mainly used in the Levain Cup.