Your ability to transfer strong skills and stats during inheritance in Umamusume: Pretty Derby hinges on Affinity. Low affinity means weaker training bonuses, even with top-tier support cards.
Affinity Mechanics Explained
- Every racehorse girl belongs to hidden compatibility groups.
- At a run’s start, the game calculates alignment between your main character’s groups and those of selected legacies/sub-legacies.
- Group Matches: Points are added when main/legacy share groups or main/legacy/sub-legacy overlap.
- Bonus Points: Extra affinity is earned if both legacy and sub-legacy belong to the same group.
G1 Race Win Bonuses
- Shared G1 victories between legacies or sub-legacies grant +3 affinity points per match.
- Example: If Legacy A and Sub-legacy B both won the Arima Kinen, and Legacy A/B share another G1 win, this stacks to +6.
Character Version Irrelevance
Different versions of a character (seasonal, collab, etc.) contribute equally to affinity. Only the name matters—not rarity or variant.
Optimizing with the Affinity Calculator
- Use the specialized Uma Musume calculator before training starts.
- Input your main character and legacies—the tool automatically checks sub-legacies and displays your total affinity score.
- Critical Tip: Always verify you’ve met the threshold for double-O inheritance to avoid wasted runs.
TL;DR
- Affinity determines inheritance effectiveness through hidden group alignment.
- Shared G1 victories boost compatibility scores significantly.
- All character versions contribute equally to affinity calculations.
- Always validate setups with the affinity calculator to ensure success.