[2] Hara made his debut for Albirex on the opening day of the 2017 season against Sanfrecce Hiroshima.

[7] On 29 December 2022, he joined Swiss Super League side Grasshopper Club Zürich on loan with an option to buy.

[8] He debuted in the first game following the winter break, in a 1–2 defeat to Young Boys,[9] and was nominated to the starting lineup a week later in a 1–1 draw against FC Lugano.

Unfortunately, on 1 February 2023, in a cup tie against FC Basel, his only third appearance for Grasshoppers, he dislocated his shoulder, ruling him out for over a month.

On May 24, 2019, Hara has been called by Japan's head coach Hajime Moriyasu to feature in the Copa América played in Brazil.