Demuro added to his victories in the Japanese 2,000 Guineas race in 2003 and 2004.
Logotype, who was the favourite in a field of 18, broke the Group One race record with a time of 1min 58secs on firm going at Nakayama Racecourse.
The colt took half a second off the old Satsuki-sho mark held by No Reason.
Epiphaneia came in second, a half-length of the pace, with Codino in third, a further length and a quarter back.
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