In a race featuring plenty of European interest, including the French-trained Arc winner Solemia, home-trained runners dominated the finish.
Orfevre was sent off favourite on the back of his effort in Paris, where he looked to have the race in the bag only to wander around in the final few yards and lose out in the shadow of the post.
Orfevre demonstrated no such tendencies this time though and was happy to settle in the pack under Kenichi Ikezoe as Beat Black set out to make all. The early leader soon built up a healthy advantage and had five lengths in hand at the top of the straight but his early efforts began to tell in the final couple of furlongs.
Ikezoe was poised to challenge aboard Orfevre and, when he gave the signal, the colt started to pick up and close the gap on Beat Black.
Gentildonna went with him though, her rider Yasunari Iwata appeared to force his way out, bumping Orfevre in the process.
His mount, winner of the Japanese Fillies' Triple Crown this year, proved game in the finish and stuck her head out to edge out Orfevre by a nose at the line.
However, the stewards quickly called an inquiry, with trainer Sei Ishizaka enduring a nervous wait before his filly was finally confirmed the winner.
Rulership claimed third to give owners the Sunday Racing Co a memorable one-two-three, with Fenomeno also claiming fifth for the powerful team.
The Ed Dunlop-trained Red Cadeaux fared best of the European raiders in finishing eighth, although he did not enjoy the best of runs under Gerald Mosse.
Marco Botti's Melbourne Cup third Jakkalberry was 11th while the Luca Cumani-trained Mount Athos, who raced keenly early on, was 12th.
Solemia could finish only 13th for Carlos Laffon-Parias while Roger Varian's Sri Putra was last of the 17 runners.