Arai played on the Japan Golf Tour, winning six times.

His best finish was a tie for second at the 1985 Bing Crosby National Pro-Am.

He played on the Champions Tour in 2000, with one top-10 finish at The Instinet Classic.

PGA of Japan Tour playoff record (1–4) Note: Arai only played in the Open Championship.

This biographical article relating to golf in Japan is a stub.