[6] He scored his first competitive goal for Hertha on 16 August 2014 in a 4–2 win during the first round DFB Pokal game against FC Viktoria Köln.

[8] While on loan at Düsseldorf for the 2017–18 season, Haraguchi played a key role in helping the side gain promotion to the Bundesliga.

[10] On 18 May 2024, VfB Stuttgart announced that Haraguchi will leave the club after this season when his contract expires.

He played against China PR and South Korea for 71 and 90 minutes respectively, and helped Japan to win the championship for the first time.

[13][14] In May 2018 Haraguchi was named to Japan's preliminary squad for the 2018 FIFA World Cup in Russia.