The "BNW no Chikai" (The Oath of BNW) feature for Uma Musume Pretty Derby
is a three-part OVA (Original Video Animation) series that serves as an unofficial 14th episode of Season 1. It was originally bundled as a bonus with the "Umabako" 4th Corner Blu-ray set released in December 2018. Core Features & Content
Narrative Focus: The story shifts its spotlight to the "BNW" trio—Biwa Hayahide, Narita Taishin, and Winning Ticket—who are loosely based on real-life 1994 Tenno Sho (Autumn) competitors.
Plot Summary: Team Spica attempts to organize a relay race for the Spring Twinkle Series Fan Festival. They must convince the BNW trio to join, specifically working to prevent the disillusioned Narita Taishin from retiring after a series of losses.
Episode Structure: The feature consists of 3 parts (approx. 25 minutes each), often found in "repack" formats as a single continuous special or a three-episode mini-series.
Production Quality: Produced by P.A. Works, the animation maintains the high quality of the first season, featuring complex 3D race graphics and a large cast of returning characters. Key Characters (The BNW Trio) Real-Life Inspiration Voice Actress Biwa Hayahide 1993 Kikuka Sho Winner Yui Kondō Narita Taishin 1993 Satsuki Sho Winner Keiko Watanabe Winning Ticket 1993 Japanese Derby Winner Yui Watanabe "Repack" Specifics
In the context of fan distributions or "repacks," this feature typically includes:
Visual Polish: Combined episodes into a single feature-length file.
Bonus Materials: Some versions include the original "setting materials" and cast interviews originally exclusive to the Blu-ray. uma musume pretty derby bnw no chikai repack
Subtitles/Dubbing: Multi-language subtitle tracks (English, Russian, etc.) integrated into the video container. Episode 1: Extra R: The BNW's Oath Part 1 - Umamusume Wiki
Episode Guide ... The BNW's Oath Part 1 is the first episode of the BNW no Chikai three-part OVA series that is part of Umamusume: Umamusume Wiki | Fandom Anime/BNW no Chikai | Umamusume Wiki | Fandom
Since "BNW no Chikai" is widely considered one of the most emotionally impactful story arcs in the series, I have compiled an analytical report focusing on the narrative significance of this arc and the value it brings to a "Repack" collection.
In the context of a "Repack" (a compressed, offline-friendly, or archived version of the game), BNW no Chikai offers specific value:
The Ultimate Guide to "Uma Musume Pretty Derby: BNW no Chikai" Uma Musume Pretty Derby: BNW no Chikai
(translated as BNW's Oath) is a three-episode OVA (Original Video Animation) series that serves as a bridge between the first and second seasons of the popular Uma Musume Pretty Derby anime. Released between December 2018 and February 2019, it was initially bundled as a bonus with the fourth Blu-ray volume of the first season. Core Story: The BNW Trio
The OVA shifts focus from the main series protagonist, Special Week, to the "BNW" trio—three legendary rival horse girls based on real-life 1993 Japanese Triple Crown winners: Biwa Hayahide: The composed and analytical leader. Narita Taishin: The aloof and prickly "loner" of the group.
Winning Ticket: The energetic and emotional heart of the trio. The "BNW no Chikai" (The Oath of BNW)
The Plot: Team Spica attempts to organize a massive relay race for the Spring Twinkle Series Fan Festival. However, the BNW trio has drifted apart following a disappointing race, with Narita Taishin even considering retiring from the sport entirely. The episodes follow Team Spica's efforts to reconcile the three rivals and bring them back to the track for one final, fierce competition. Production & Viewing Details
[Rewatch] Uma Musume: Pretty Derby OVA 2 Discussion : r/anime
Uma Musume Pretty Derby: BNW no Chikai (BNW’s Promise) is a three-episode OVA series that serves as a bridge within the Uma Musume anime franchise, focusing on the legendary "BNW" trio: Biwa Hayahide, Narita Taishin, and Winning Ticket. Originally bundled with the fourth Blu-ray volume of the first season in late 2018, this "repack" of their story provides deep character development for girls outside of the central Team Spica. The Heart of the Story: The BNW Trio
The OVA shifts the spotlight to three rivals who dominated the 1993 Japanese Triple Crown in real life. In the anime, their bond has fractured following a series of losses, leading to a period of isolation and low morale. Biwa Hayahide
: A brilliant theorist who approaches racing with logic and precision. She is often seen managing her voluminous hair and supporting her friends. Narita Taishin
: The "loner" of the group. Stung by recent defeats, she contemplates retiring from racing entirely, prompting the other girls to intervene. Winning Ticket
: A passionate and emotional racer whose drive is fueled by her love for the Japan Derby. Plot Overview: The Relay Race
The narrative centers on Team Spica attempting to recruit the BNW trio for a special relay race at the Spring Twinkle Series Fan Festival. Winning Post 9
The Conflict: While Hayahide and Ticket are open to the idea, Taishin remains distant. Much of the OVA involves the other horse girls—including Narita Brian, Hayahide’s sister—encouraging Taishin to rediscover her competitive spirit.
The Race: The climax features a fierce relay where the BNW members eventually reconcile. Although the race ends in a characteristically chaotic "no-winner" result due to Team Spica's antics, it succeeds in repairing the trio's bond. Why It’s Worth Watching
Universe Expansion: It proves that every horse girl in the academy has a story worth telling beyond the main protagonists, adding "considerable depth" to the franchise.
Production Quality: Produced by P.A. Works (the studio behind Season 1), the OVA maintains the same high-quality animation and lighthearted yet emotionally resonant tone.
Character Cameos: Fans get to see the return of the full Season 1 cast, framed around the exciting Fan Festival event. Uma Musume: Pretty Derby - BNW no Chikai | STREAMD
Special episode included with the fourth volume of Uma Musume: Pretty Derby Blu-ray release. * Finished. * #5,517. * Dec 19, 2018. www.streamdanime.io
A major PC horse racing sim, Winning Post 9, has a modding scene that replaces race horse textures with Uma Musume characters. The BNW repack provides high-resolution asset rips (character sprites, background frames) for these mods.