The Japanese Classic season roars to life this Sunday, April 13, 2026, as Hanshin Racecourse plays host to the prestigious G1 Oka Sho, the Japanese 1000 Guineas, contested over 1600 meters. This iconic race, steeped in history and tradition, serves as the opening chapter of Japan’s Triple Crown for three-year-old fillies, setting the stage for a thrilling campaign that will captivate racing enthusiasts worldwide. The Oka Sho, established in 1939, has a storied past, launching the careers of numerous equine superstars and consistently delivering breathtaking performances that etch themselves into racing folklore. Its demanding 1600-meter trip at Hanshin tests both the speed and stamina of these elite fillies, demanding a blend of precocity and the promise of future development.

Leading the charge and generating considerable buzz is the formidable Star Anise (Drefong), the reigning 2025 Japanese Champion Juvenile Filly. Her impeccable two-year-old season culminated in a decisive victory in the G1 Hanshin Juvenile Fillies, where she showcased remarkable tenacity and class, overcoming a challenging wide trip to defeat rivals including Garavogue (Lord Kanaloa). This triumph cemented her status as the preeminent filly of her generation and has positioned her as a strong favorite for this coveted Classic.

While Star Anise’s 2026 debut has been eagerly anticipated, she makes her seasonal bow in the Oka Sho from stall 15 in a highly competitive 18-horse field. Trainer Tomokazu Takano expressed his confidence in his charge’s preparation. "In her last race, the Hanshin Juvenile Fillies, the jockey (Kohei Matsuyama) had faith in her and took her wide and traveled there. She handled it well and it was a strong race," Takano reflected. He further elaborated on her recent progress, stating, "She came back to the training center on March 20 and has put on muscle. In her fast work on April 1, the jockey rode and her movement was very powerful. She looked good overall and all aspects of her preparation have gone well." This assessment suggests Star Anise is entering the Oka Sho in peak physical condition, ready to carry her juvenile brilliance into the Classic arena.

However, Star Anise faces stern opposition, notably from Dream Core (Kizuna), who has captured the attention of ante-post markets and is considered a significant contender. A dual winner at two, Dream Core demonstrated her burgeoning talent with a commanding victory in the G3 Daily Hai Queen Cup on Valentine’s Day, also over the Oka Sho distance. This performance over 1600 meters, where she bested Zippy Tune (Lord Kanaloa), indicated she possesses the class and aptitude to challenge for Classic glory and possesses significant room for further improvement.

Her trainer, Kiyoshi Hagiwara, whose illustrious career includes training Dream Core’s dam, the exceptional Normcore (to victories in the G1 Victoria Mile and G1 Hong Kong Cup), highlighted the filly’s recent development. "The Queen Cup was her fourth start and for the first time, she displayed a different burst of speed," Hagiwara noted. He detailed her training regimen, explaining, "I decided to train her at Ritto so we would avoid shipping in right before the race, and also so I could be assured we’d get enough training sessions in. She has adapted well to the new surroundings and everything has gone smoothly since she got to Ritto. The track layouts are different from Miho so it’s a bit difficult to get a feel for them, but we got ample work." Hagiwara also addressed her physical development: "Her body weight has increased from her debut and I don’t consider that to be a bad thing. During this immediate period her weight has been about the same as it was for her last start. I think everything is going well going into the race. She and her dam Normcore don’t look alike, but this one has inherited her high ability." This lineage and Hagiwara’s astute training offer a compelling case for Dream Core’s Classic aspirations.

Another prominent contender with established 2026 form is Black Chalice (Kitasan Black). Occupying stall 17, this filly, who had shown promise with group placings at two, truly announced her arrival with a decisive victory in the G3 Fairy Stakes in early January, over the same 1600-meter trip as the Oka Sho. Trainer Koshiro Take expressed optimism about her chances. "In the Fairy Stakes (G3, 1,600m), she got a good position, raced nicely balanced and very well," Take commented. He added, "She has matured, so we’ve given her ample work and I think she’ll go to the gate in good shape. Up to now the extra distance hasn’t prevented her from getting a good position. Her strong point is her good racing sense." Black Chalice’s intelligent racing style and proven ability at the distance make her a significant threat.

Completing the quartet of high-profile contenders is Lily Joie (Silver State), an undefeated three-for-three filly who, like Black Chalice, hails from the stable of trainer Koshiro Take. While yet to compete in group company, Lily Joie’s flawless record speaks volumes. She graduated from the prestigious ¥50,600,000 JRHA Select Sale as a weanling and captured the Listed Kobai Stakes in January. Although untested at the 1600-meter distance of the Oka Sho, her trainer remains confident in her potential. "She does tend to make a huge effort in her racing, so I go easy on the workouts," Take explained. "She has filled out and I’m glad we were able to give her ample time. The distance is no worry. Key will be being able to relax during the race." Take also acknowledged potential challenges, stating, "I am a bit concerned about the atmosphere on a Group 1 day. Also, she has a very competitive spirit, so staying balanced is key. She has a fantastic spring to her gait and a wide range of motion. Her stride is big and she does best on a firm surface." Her ability to harness her competitive spirit and maintain composure in the electrifying Group 1 atmosphere will be crucial to her success.

Further bolstering the depth of the Oka Sho field are fillies who have demonstrated their capabilities over the mile. Sweet Happiness (Real Impact) impressed when winning the Listed Elfin Stakes in Kyoto in February, a performance that suggests she is well-suited to the distance. She will be looking to improve upon her fourth-place finish in the Hanshin Juvenile Fillies, where she ran behind the now-favorite Star Anise. Similarly, Alankar (Epiphaneia), who finished fifth in the same juvenile feature, will also be aiming to make her mark in this elite Classic.

The Oka Sho, as the first leg of the Japanese Fillies’ Triple Crown, holds immense significance. The subsequent legs are the G1 Yushun Himba (Japanese Oaks) over 2400 meters and the G1 Shuka Sho, also over 2000 meters. Success in the Oka Sho not only bestows Classic glory but also often serves as a springboard for a filly’s broader racing career, potentially leading to international engagements and considerable breeding value. The historical performances in this race underscore its role as a true test of a filly’s mettle, identifying those with the potential to become household names and future broodmare legends.

The strategic importance of the Oka Sho cannot be overstated in the Japanese racing calendar. It provides an early gauge of the strength of the current three-year-old filly crop, offering insights into which pedigrees and training philosophies are yielding the most promising results. The race often throws up surprise performers and confirms the class of established favorites, creating compelling narratives that unfold throughout the season. The fact that the Oka Sho is held at Hanshin, a track known for its demanding backstretch and sweeping turns, adds another layer of complexity, requiring fillies to possess not only raw talent but also the tactical acumen to navigate the course effectively.

The anticipation surrounding the Oka Sho is palpable. The clash between the reigning juvenile champion, Star Anise, and the rapidly improving Dream Core, alongside the proven Graded stakes winners Black Chalice and the undefeated Lily Joie, promises a spectacle of speed, class, and determination. The connections of each filly have expressed confidence, underscoring the meticulous planning and dedication that goes into preparing a horse for such a high-stakes occasion. The race is expected to draw significant betting interest, both domestically and internationally, further highlighting its global appeal.

Beyond the immediate competition, the Oka Sho’s results will have far-reaching implications. For the winning connections, it represents the pinnacle of achievement in juvenile and early classic racing, a dream realized after months of dedicated effort. For the breeders, it validates the quality of their bloodstock, enhancing the commercial value of their stallions and mares. For the racing industry as a whole, it signals the vibrant health of Japanese Thoroughbred racing, a testament to its continuous pursuit of excellence and its ability to produce world-class equine athletes. As the gates swing open on Sunday, the racing world will be watching, eager to witness the crowning of the next G1 Oka Sho heroine and the unfolding of another chapter in the rich tapestry of Japanese racing history. The stage is set for a truly memorable renewal of this esteemed Classic.