W Heart Bond

2024: three-year-old season

She debuted on 18th of August in the 1800 metres dirt race at Chukyo Racecourse, under the helm of Ryusei Sakai as her jockey. During the race, the horse easily settled into second place and took the lead before the fourth turn. She quickly widened the gap between itself and the rest of the field to win the race by six lengths over Pop Star. For the next race, she nailed a good start, led from the gate and accelerated away from the pack at the fourth corner to win her second race in succession. However, she was diagnosed with a fracture at her third carpal bone in her left fore leg after the race. This injury subsided her for the whole season.

2025: four-year-old season

She returned for the new season at the Ena Tokubetsu, still with Sakai at her helm. Starting from the far outside gate, she quickly moved to the front and chased down T O Ruby and Miyaji Regalia. In the straight, she was in a battle with Miyaji Regalia but prevailed and pulled away to win her third consecutive race. W Heart Bond continued her form with a great performance at the Maizuru Stakes as she positioned herself in second place during the race, keeping an eye on the leader, Bastard Saffron. She took the lead with about 200 metres to go and held off the rest of the field to win her fourth race out of four starts since debut and moved up to the open class. For her first start in the open class, she ran in the Sannomiya Stakes at Hanshin Racecourse on June. In this race, she was marking the leader, Leander at second place in early phase. At the final stretch, she responded to Sakai's whip and dashed forward for the lead. Although Vanyar tried to close her down, W Heart Bond held on to win the race by a neck.

Her next race would be decided to be at the Breeders' Gold Cup, a JPN III race which would marked her first graded race since debut. When the gates opened, she took the lead despite being closely marked by Awesome Result and led the pack. She maintained the lead until the very end but was overtaken by Riot Grrrl who came up hard from behind and finished second. Speaking on her first lost ever, Sakai stated, "It was her first time racing at night and on the white sand, and it wasn't a problem at all. She was able to go at an easy pace and maintain a good rhythm. The winning horse just had a better finishing kick." Her next race was initially to be the JBC Ladies' Classic but as she was excluded due to lack of prize money offered, she was pivoted into the Miyako Stakes instead. In the early stages, her jockey pushed her hard, and she was in contention for the lead with Revontulet. She settled into second place at the second corner. Reaching the third corner, W Heart Bond took the lead and pulled away from the rest of the field towards the final straight. Saimon Xanadu came up from behind and challenged her, but she held on to win her first graded stakes race and doing so in a record time. She was also the first filly to win said race.

Her next race for the year would be the season-ending race which was the Champions Cup at Chukyo Racecourse, her first G1 races where she aimed to become the first filly to win it since Sambista in 2015. For this race, she was the third favourite behind Narukami and Luxor Cafe. In the beginning, she broke out well from stall 2, traveled two-wide in third and rounded the final corners wide to enter the lane in good striking position. The four-year-old filly produced an impressive turn of speed in the stretch to seize the lead with 300 metres to go and engaged in a gripping duel with fast-closing Wilson Tesoro over the final 100 metres. W Heart Bond held off her rival with tenacity to ultimately prevailed in a photo finish. The final margin of victory was a nose. This would be the first filly win since 2015 and also his jockey, Ryusei Sakai's third consecutive win of the competition (adding up to his previous two edition win with Lemon Pop). Sakai said she showed an incredible heart on the day as she utilized her real strength to the end.

2026: five-year-old season

As the new season begun, W Heart Bond were tipped as the favourite to win the February Stakes after the team declined the invitation to run at the Saudi Cup. During the early part, she settled nicely in around fourth or fifth position and had a clear path along the center lane after rounding the final corner. She gained ground impressively to engage in a four-horse rally with the eventual winner, Costa Nova, Wilson Tesoro and Brian Sense from the furlong pole to the wire. She was beaten to third by both Costa Nova and Wilson Tesoro but managed to cross the wire three-quarters of a length in front of Brian Sense. Sakai stated after the race that a slight start on the turf made her a bit sluggish at times but all in all admitted that W Heart Bond was still a strong horse that was capable to winning races.

The horse was off the racetrack for seven and a half months before returning in October at the Ladies Prelude in Ohi. Sakai stayed as her jockey as she was drawn to start from gate 2 as the favourite on the day. When the race began, W Heart Bond composed herself and ran calmly in the leading group. She maintained the pace as they approached the final straight. Still, she failed to extend her acceleration as Memoria Cafe overtook her from the outside whilst she slowed down to finish in fourth on the line, her first finish outside of the podium. Post-race, Sakai declared that the horse was good in training and was surprised she did not respond to his cue at the end, but hoped that the horse could make her comeback in the next race.