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.