He was from the sixth crop of foals sired by Deep Impact, who was the Japanese Horse of the Year in 2005 and 2006, winning races including the Tokyo Yushun, Tenno Sho, Arima Kinen and Japan Cup.

[3] Dee Majesty was described by his groom as embodying the best qualities of his male ancestors, having "the body of Brian's Time, the heart and lungs of Sadler's Wells and the sharpness of Deep Impact".

[4] Dee Majesty began his track career by finishing second to King Lion in an event for previously unraced juveniles over 1500 metres at Sapporo Racecourse on 5 September.

Ridden by Masayoshi Ebina he won by one and a quarter lengths from Immortal with the odds-on favourite Hartley (winner of the Hopeful Stakes) coming home ninth of the ten finishers.

He produced a strong run in the straight, took the lead from Leontes 100 metres from the finish and drew away to win by one and a quarter lengths, with Makahiki taking second ahead of Satono Diamond.

Ebina repeated his tactics from the Satsuki Sho, coming from well off the pace before moving up on the outside for a late run in the straight, but on this occasion he was never able to get to the lead and finished third, beaten a nose and half a length by Makahiki and Satono Diamond.

[10] On 23 October Dee Majesty started second choice in the betting for the Kikuka Sho over 2800 metres at Kyoto Racecourse but despite finishing strongly he came home fourth behind Satono Diamond, Rainbow Line and Air Spinel, beaten two and three quarter lengths by the winner.

A month later he started a 35/1 outsider for the spring edition of the Tenno Sho at Kyoto and came home sixth in a race won by Kitasan Black.