# 2026 Weiß Schwarz Booster Pack Umamusume: Pretty Derby #UMA/W106-E091

> The pf. Winning Equation... Biwa Hayahide card (UMA/W106-E091) is an R-rarity release from the 2026 Weiß Schwarz Umamusume: Pretty Derby booster pack.

Canonical URL: https://supercatch.com/product/weiss-schwarz-booster-pack-umamusume-pretty-derby-pf-winning-equation-biwa-hayahide-umaw106-e091-r

## Identity

- **Year**: 2026
- **Manufacturer brand**: Weiß Schwarz
- **Set / series**: Booster Pack Umamusume: Pretty Derby
- **Card number**: #UMA/W106-E091
- **Product type**: TCG_CARD

## Description

The pf. Winning Equation... Biwa Hayahide card (UMA/W106-E091) represents a key entry in the 2026 Weiß Schwarz Umamusume: Pretty Derby series. As part of the Booster Pack Umamusume: Pretty Derby release, this card features the character Biwa Hayahide in her pf. variant. The card is designated with an R rarity, making it a notable addition for collectors building comprehensive sets or seeking specific character interactions within the Weiß Schwarz trading card game ecosystem.

The Umamusume: Pretty Derby crossover brings beloved anime characters into the competitive TCG space, appealing to both fans of the franchise and seasoned card game players. The 2026 release date positions this card within a modern era of Weiß Schwarz collaborations, known for high-quality artwork and engaging gameplay mechanics. Collectors appreciate the precision of the card number UMA/W106-E091, which helps in organizing and tracking their acquisitions.

For enthusiasts of the Umamusume: Pretty Derby universe, this card offers a tangible connection to the story and characters they follow. The pf. Winning Equation... Biwa Hayahide card is a testament to the growing intersection of anime culture and collectible card games, providing a unique piece for display or gameplay. Its inclusion in the Booster Pack Umamusume: Pretty Derby ensures it remains a relevant and desirable item for those who value both the narrative and the mechanical depth of the Weiß Schwarz game.

## FAQ

### What is the rarity of the pf. Winning Equation... Biwa Hayahide card?

The pf. Winning Equation... Biwa Hayahide card (UMA/W106-E091) from the 2026 Weiß Schwarz Umamusume: Pretty Derby set has an R rarity. This designation indicates its frequency within the booster pack distribution.

### Which series does this card belong to?

This card is part of the Booster Pack Umamusume: Pretty Derby series released in 2026. It is a crossover product within the Weiß Schwarz trading card game, featuring characters from the popular anime franchise.

### How is the card identified in the catalog?

The card is cataloged under the number UMA/W106-E091. This unique identifier helps collectors locate and organize the card within the broader Weiß Schwarz Umamusume: Pretty Derby collection.

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Last verified: 2025-11-29.