Japan international Shunsuke Nakamura admits he has had to readjust to life in the J-League following his transfer to Yokohama F Marinos.

GettyImagesShunsuke Nakamura is back in Japan.

Nakamura, 31, left his homeland to join Italy's Reggina in 2002 and had a wildly successful spell with Celtic before joining Espanyol in the summer.

Having made just six Primera Liga starts for the Spanish club, Nakamura joined Yokohama in February to return to his former club. However, he admits a period of acclimatisation may be required.

"I've played at the stadium here a bunch of times with the national team, so nothing felt new about that," Nakamura said according to the Daily Yomiuri following a game against Shonan Bellmare. "And it was nice to hear the fans singing the same song from seven-and-a-half years ago.

"But everyone on the pitch was Japanese and that felt a little weird. Your teammates, the opponents, the referees - that was strange. The game was quick. Against the top teams, we're going to have to do better than we did today."