Behind the triumphant win of King Argentine at the 2025 Indonesian Derby lies a fascinating connection to a character from the Uma Musume: Pretty Derby video game. King Argentine has been revealed to share a bloodline with none other than TM Opera O, one of Japan’s legendary racehorses and the inspiration behind the TM Opera O character in the franchise.
TM Opera O is a well-known figure in Japanese horse racing history. Celebrated for his remarkable stamina, he famously won every major race in a single season in the year 2000. In Uma Musume, he is reimagined as a regal, charismatic girl with natural leadership qualities.
According to Sarga.co, the organisers of the Indonesian Derby horse racing competition, King Argentine is reported to be a descendant of Blushing Groom, a French thoroughbred who is also part of TM Opera O’s lineage. This connection makes King Argentine a distant relative of the real-life TM Opera O, and by extension, a relative of the Umamusume character inspired by him.
Representing King Halim Stable, King Argentine is the horse that won the Indonesia Derby 2025 horse racing competition. This win marked a historic milestone in the Indonesian horse racing scene, as King Argentine became the first horse to secure the Indonesian Triple Crown title in eleven years.
Uma Musume: Pretty Derby is a Japanese video game developed by Cygames. The game features anthropomorphised racehorses that are inspired by real-life racehorses. Originally released as a mobile game in 2016, the game was finally released on PC in June 2025 alongside its global release.
The Indonesian Anime Times | Source: Sarga.co
