The 23-year-old, who previously played for Urawa Red Diamonds - the J-League table-toppers in Japan - will join up with former team-mate Hajime Hosogai after agreeing to a deal that will keep him in Berlin until 30 June 2018.
'We have options'
“Haraguchi can be used in several positions across our frontline. He can play on the left and the right, in the middle or as second striker,” said sporting director Michael Preetz. “We have a lot of different options now in attack.”
Genki Haraguchi made 162 appearances in the Japanese top-flight scoring 33 goals and providing 22 assists and, while there may be a bedding in period for the youngster, “we will give him time,” said Preetz. “Everything will be new for him here; the continent, the city, the club and the language, but he will be well looked after with Hosogai at his side.”