[4] After winning his first three professional fights, Nishida was booked to challenge the former WBC flyweight and reigning WBO Asia Pacific bantamweight champion Daigo Higa on 24 April 2021.
[7] Nishida made his first WBO Asia Pacific bantamweight title defense against Tetsuro Ohashi on 19 December 2021, in the main event of a "Muto Promotions" card which took place at the Sumiyoshi Ward Center in Osaka, Japan.
[8][9] Nishida made his second WBO Asia Pacific title defense against the #15 ranked OPBF bantamweight contender Aljum Pelesio.
The title bout headlined the "You Will Be the Champion 14" event, which took place at the Sumiyoshi Ward Center in Osaka, Japan on 9 October 2022.
[14] In a very close fight Nishida defeated Emmanuel Rodríguez by unanimous decision in Osaka, Japan, on 4 May 2024 to become the IBF bantamweight world champion.