On 10 February, he made his professional debut as a substitute in the Japanese Super Cup against Cerezo Osaka.

On 8 January 2021, it was announced that Morita would sign for Portuguese club CD Santa Clara, in the Primeira Liga.

[5] When he made his debut on 25 January, he netted his first goal for the club, scoring the winner in the 89th minute of a 2–1 victory over Rio Ave.[6] On 1 July 2022, it was announced that he would join Sporting CP on a permanent transfer.

[11] He made his national team debut on 11 September, coming on against Costa Rica, the first game under new coach Hajime Moriyasu.

In January 2019, he was called up to the Japan national team for the AFC Asian Cup 2019 but withdrew due to injury.