First Force is out of Rush Life (Sakura Bakushin-Oh), a multiple stakes winner in Japan who won two of her 19 starts over sprint distances and was twice second at Group 3 level at two. Her seven other named foals aged three and over include the Group 3 winner A Day In The Life (Deep Impact) and three further winners.

Second dam Friend Lei (Danehill) was lightly raced and produced four other winners, led by the Listed winner Tagano Dangerous (End Sweep) and Basel River (Fuji Kiseki), a stakes winner over jumps.

Third dam Martin Miyuki (Maruzensky) was a winner and bred five winners. She is the grandam of the Group 3 winner Meisho Naruto and of his half-brother Epicharis, a Listed winner.