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Master the Legacy system in Umamusume: Pretty Derby. Learn how Sparks, inheritance, and affinity work to build race-winning Trainees.
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The Legacy system is one of the most rewarding mechanics in Umamusume: Pretty Derby, letting you pass down stats, aptitudes, and skills from your trained Veteran Umamusume to fresh Trainees. Think of it as building a family tree of racing talent, where every generation can be stronger than the last. Whether you're aiming to fix a weak aptitude or stack powerful skill hints, understanding how Sparks and inheritance work is the key to competing at the highest levels.
Legacy is an endgame mechanic that lets a completed Veteran Umamusume (one who has finished a Career) pass on Sparks of Inspiration to a new Trainee. These Sparks can boost starting stats, improve aptitude grades, and provide skill hints that would otherwise take many training sessions to acquire.
Here's the thing: this system isn't something new players need to stress about immediately. Getting comfortable with Career training first is the right call. Once you have a few Veteran Umamusume with solid Sparks, the Legacy loop becomes a powerful tool for building progressively stronger characters.
Three core reasons to invest in Legacies:
Legacy family tree selection
The inheritance process follows a clear sequence. Here's how to set it up correctly every time.
Open the Trainee Select screen and choose the character you want to train. Their base stats and aptitude grades will appear at the center of the screen, giving you a clear picture of what needs improvement.
Below the stat display, fill in the two main Legacy slots with Veteran Umamusume. These are your Trainee's Parents, and they're responsible for the primary stat boosts and skill hints your Trainee will receive during Inspiration Events.
Each Legacy also brings their own Legacies along, called Sub-Legacies (or Grandparents). This means six characters total contribute to the Sparks pool your Trainee can draw from.
After selecting your Legacies, review the Sparks Screen to see exactly what bonuses your Trainee could receive. Each Spark is rated by stars (★), and higher star counts mean stronger bonuses. The Sparks screen tells you upfront what stats, aptitudes, or skills are in play.
In the Legacies List, use the sort option at the lower right and select Affinity Bonus. This filters Legacies by how compatible they are with your Trainee, making it much easier to find the best combination without guesswork.
Once your Legacies and Sub-Legacies are set, hit Next on the Legacy Select screen. An Inspiration Event will fire immediately, granting your Trainee their first round of stat and skill bonuses. Two more Inspiration Events occur during the Career: one in Early April of the Classic Year and one in Early April of the Senior Year.
After your Trainee completes their Career, they become a Veteran Umamusume with their own Sparks, ready to be used as a Legacy for the next generation.
Gold Inspiration Event bonus
Sparks are the specific bonuses a Veteran Umamusume can contribute to a Trainee. They come in four types, each with different effects and activation timing.
| Spark Type | Color | What It Gives | Activation Timing |
|---|---|---|---|
| Stat Spark | Blue | Speed, Stamina, Power, Guts, or Wits boost | Career Start + other Inspiration Events |
| Aptitude Spark | Pink | Track, Distance, or Style aptitude grade increase | Career Start (up to A) + later events (up to S) |
| Unique Skill Spark | Green | Hint levels for the Legacy's Unique Skill | Career Start (guaranteed from Parents) |
| Normal Skill Spark | White | Hint levels for normal skills from Support Card events | Other Inspiration Events only |
| Race Spark | White | Hint levels for race-specific skills or stat boosts | Other Inspiration Events only |
For Blue (Stat) Sparks, the bonus scales directly with star count:
A Veteran Umamusume can only carry one Blue Spark, so maximizing that Spark's star count matters a great deal when building Legacies for stat-focused Trainees.
Not all Inspiration Events are equal. When the cutscene glow is gold, your Trainee receives a higher amount of stats than when it appears white (normal). This is an RNG element, so don't be discouraged if you get a string of normal events. The system is designed with variance in mind.
Sparks star ratings overview
Pink Aptitude Sparks are particularly powerful because they let you reshape a character's strengths. At Career Start, an Aptitude Spark can raise a grade up to A. During the second and third Inspiration Events, a successful activation can push an aptitude all the way to S.
The first grade increase (for example, C to B) only requires 1★ in the relevant Aptitude Spark across all Legacies and Sub-Legacies combined. Every subsequent grade increase requires 3★ more in that same Spark type.
Example: Raising Dirt aptitude from D to A requires 7★ total
This means a single well-built Legacy can sometimes cover the entire jump from D to A on their own. For instance, a Veteran Haru Urara with a 3★ Dirt Spark whose own Legacies each carry 2★ Dirt Sparks contributes a combined 7★, which is exactly enough to take a character's Dirt aptitude from D to A in one shot.
| Stars Needed | Grade Change |
|---|---|
| 1★ | First increase (e.g., D→C or C→B) |
| 3★ additional | Each subsequent increase |
| 7★ total | D → A (full raise) |
| 4★ total | C → A |
| 1★ total | B → A |
Affinity determines how well a Legacy's Sparks align with your Trainee. Higher affinity means better results. The ◎ symbol marks the best compatibility matches. Several factors influence affinity:
Sorting Legacies by affinity
Yes. You can rent a Guest Legacy from players on your Friends List by spending Monies. When you borrow a friend's Veteran Umamusume, they earn a Trainer Medal and Friend Points. If you're in the same Club, you get a Monies discount and they receive Club Points instead.
Each account starts with a maximum of 15 Friend Follows. Additional Follow Slots can be purchased at the Friend Point Exchange if you need access to more Guest Legacies.
Green Sparks carry hint levels for a Legacy's Unique Skill. Only 3-star characters can generate a Green Spark at the end of their Career. When a Parent's Green Spark activates at Career Start, the Trainee receives hint levels for that Unique Skill.
One important limitation: a Unique Skill inherited through a Green Spark cannot be leveled up further during the Trainee's Career. It functions as a fixed hint, not a fully trainable skill. Sub-Legacies' Green Sparks have a chance to activate during the second and third Inspiration Events.
Here's what separates players who get decent results from those who consistently produce strong Veteran Umamusume:
