Urawa Reds Daiki Hashioka joined
J1 League club
Urawa Reds in 2017. On 30 August, he debuted in
J.League Cup (v
Cerezo Osaka). On 6 March 2019, Hashioka made his
AFC Champions League debut, at 19 years old, scoring twice in a 3–0 victory over Thai club
Buriram United.
Sint–Truiden On 31 January 2021, Hashioka joined
Sint-Truiden on loan for the remainder of the 2020–21 season. Hashioka made his debut in European football on 28 February 2021, as a substitute in a 2–0 defeat to
Eupen. Hashioka joined Sint-Truiden permanently at the end of the season, scoring his first goal for the club on 17 September 2023, in a 2–0 victory over
Mechelen.
Luton Town On 30 January 2024, Hashioka signed with
Luton Town, becoming the first ever Japanese player in the club history. He made his Hatters debut after coming off the bench in a 6–2 loss to holders
Manchester City in the fifth round of the
FA Cup. He then scored an own goal in the 2nd minute against Manchester City in the Premier league on 13 April 2024.
Slavia Prague On 27 June 2025, following successive relegations with Luton Town, Hashioka signed for
Slavia Prague for an undisclosed fee.
Loan to Gent On 2 February 2026, Hashioka joined
Belgian Pro League club
Gent on a half-year loan deal with an option to make the transfer permanent. ==International career==