Daiwa Scarlet was foaled on 13 May 2004 at Shadai Farm, She was a chestnut mare by Agnes Tachyon.

In January 2007, Daiwa Scarlet ran in the Shinzan Kinen, but was passed by another horse that came from behind, coming in second place.

As a result of the race, Daiwa Scarlet earned the title of double crown mare.

In the race, Daiwa Scarlet ran her usual run, but although she was on the verge of winning, she ended up in second place.

The following year, there were plans for Daiwa Scarlet to run in the dirt Grade I February Stakes in Japan and then try for the Dubai World Cup.

In the race, Daiwa Scarlet took the lead at the front, while Vodka and Deep Sky were chasing her on the straightaway.

No one knew who won until a photo judgement was made, where it showed Vodka was two centimeters ahead of Scarlet.

At the end of the year, Daiwa Scarlet ran in the Grand Prix Arima Kinen.

She continued to produce several more offspring in the years that followed until her last child, a colt, Grand Scarlet, was born in 2021.

An anthropomorphized version of Daiwa Scarlet appears in the multimedia franchise Uma Musume Pretty Derby.