Seiun Sky

★★★

/Medium / Long/Front Runner

Introduction

Seiun Sky is a 3-star Medium / Long character in Uma Musume: Pretty Derby. Seiun Sky's running style is Front Runner. Dormitory: Miho Dormitory.

On the combined Uma Musume: Pretty Derby tier list Seiun Sky is S tier, 8th of the 69 characters ranked, from where 2 community tier lists put Seiun Sky.

Other Medium / Long characters in Uma Musume: Pretty Derby: Air Shakur, Biwa Hayahide, Eishin Flash, Gold Ship, Inari One, Kitasan Black and 18 more.

Seiun Sky's banners

All banners

25 June 2026 to 4 July 2026Maverick, Reeling in the Big One
5 April 2026 to 18 April 2026Soirée des Chatons, Succès Étoilé
7 September 2025 to 18 September 2025Reeling in the Big One

Profile

Does what she wants, when she wants. As free as a drifting cloud...

Seiun Sky is a female Umamusume. Her birthday is April 26, and she stands 155 cm tall. Seiun Sky is voiced by Akari Kito in Japanese.

Seiun Sky's introduction: Hello. I'm Seiun Sky. I'm just taking things as they come. Good things come to those who wait, you know?

Stories

Strengths

Naps, fishing

Weaknesses

Small, confined spaces (The gate, the gate!)

About her ears

Occasionally stand straight and still when she hears something

About her tail

Just looks good without doing anything

Shoe size

Left and right: 22.5cm

Family

Goes fishing with her grandpa every time she goes home

A secret

Leaves nothing on her plate except fish bones

Weight

Undeclared

Trainee outfits

Seiun Sky has 2 trainee outfits on global, each a separate card with its own stats, aptitudes and skills: Reeling in the Big One and Soirée des Chatons.

Reeling in the Big One

3★ at first · Front Runner by default · on global since 7 September 2025

Base stats

Stars	Speed	Stamina	Power	Guts	Wit
3★	98	98	88	83	83
4★	109	109	98	92	92
5★	120	120	108	101	101

Training gains: Stamina +10%, Wit +20%

Aptitude

Track: Turf ADirt G
Distance: Sprint GMile CMedium ALong A
Running style: Front Runner APace Chaser BLate Surger DEnd Closer E

Unique skill

Angling and Scheming
Increase acceleration at an opportune moment when in the lead on a corner late-race.
Acceleration +0.4 m/s² for 4 s
level 1 at 3★, level 2 at 4★, level 3 at 5★. Passed on through inheritance as the white skill Angling and Scheming (Acceleration +0.2 m/s² for 2.4 s).

Innate skills

Hesitant Pace Chasers130 skill points
Slightly decrease velocity of pace chasers late-race.
Current speed −0.15 m/s for other runners of Pace Chasers for 3 s
Keeping the Lead160 skill points
Slightly increase ability to maintain the lead when leading by a fair margin mid-race. (Long)
Target speed +0.15 m/s for 3 s
Fast-Paced180 skill points
Slightly increase ability to go to the front mid-race. (Front Runner)
Target speed +0.15 m/s for 3 s

Potential levels

Level 2Medium Racing Shoes ×15
- Front Runner Savvy ○110 skill points
  Moderately increase ability to get into a good position. (Front Runner)
  Wit +40, Field of view +5 m
Level 3Medium Racing Shoes ×30Satsuki Sho Winner's Sash ×5Kikuka Sho Winner's Sash ×5
- Vanguard Spirit160 skill points
  Increase ability to maintain the lead when leading by a fair margin mid-race. (Long)
  Target speed +0.35 m/s for 3 s
Level 4Medium Racing Shoes ×60Satsuki Sho Winner's Sash ×15Tenno Sho (Spring) Winner's Sash ×15Japanese Derby Winner's Sash ×15Kikuka Sho Winner's Sash ×15Dream Glimmer ×2
- Tail Held High100 skill points
  Slightly increase velocity after activating many skills mid-race.
  Target speed +0.15 m/s for 3 s
Level 5Medium Racing Shoes ×100Satsuki Sho Winner's Sash ×30Tenno Sho (Spring) Winner's Sash ×30Japanese Derby Winner's Sash ×30Kikuka Sho Winner's Sash ×30Dream Glimmer ×10
- Escape Artist180 skill points
  Increase ability to go to the front mid-race. (Front Runner)
  Target speed +0.35 m/s for 3 s

Soirée des Chatons

3★ at first · Front Runner by default · on global since 5 April 2026

Base stats

Stars	Speed	Stamina	Power	Guts	Wit
3★	101	89	84	88	88
4★	112	99	94	98	97
5★	123	109	103	108	107

Training gains: Speed +8%, Power +8%, Guts +14%

Aptitude

Track: Turf ADirt G
Distance: Sprint GMile CMedium ALong A
Running style: Front Runner APace Chaser BLate Surger DEnd Closer E

Unique skill

Break It Down!
High spirits increase velocity when positioned toward the front on a late-race straight. If it's the backstretch, also slightly increase acceleration.
Target speed +0.35 m/s, Acceleration +0.2 m/s² for 5 s; then Target speed +0.35 m/s for 5 s
level 1 at 3★, level 2 at 4★, level 3 at 5★. Passed on through inheritance as the white skill Break It Down! (Target speed +0.15 m/s, Acceleration +0.07 m/s² for 3 s; then Target speed +0.15 m/s for 3 s).

Innate skills

Spring Runner ○90 skill points
Moderately increase performance in spring.
Speed +40
Rosy Outlook160 skill points
Slightly decrease fatigue when positioned toward the front mid-race. (Medium)
Recovers 1.5% of max endurance
Fast-Paced180 skill points
Slightly increase ability to go to the front mid-race. (Front Runner)
Target speed +0.15 m/s for 3 s

Potential levels

Level 2Medium Racing Shoes ×15
- Leader's Pride180 skill points
  Slightly increase ability to pass or challenge another runner early-race or mid-race. (Front Runner)
  Target speed +0.15 m/s for 3 s
Level 3Medium Racing Shoes ×30Satsuki Sho Winner's Sash ×5Kikuka Sho Winner's Sash ×5
- Escape Artist180 skill points
  Increase ability to go to the front mid-race. (Front Runner)
  Target speed +0.35 m/s for 3 s
Level 4Medium Racing Shoes ×60Satsuki Sho Winner's Sash ×15Japanese Derby Winner's Sash ×15Kikuka Sho Winner's Sash ×15Tenno Sho (Autumn) Winner's Sash ×15Dream Glimmer ×2
- Early Lead120 skill points
  Slightly increase ability to go to the front early-race. (Front Runner)
  Acceleration +0.2 m/s² for 1.2 s
Level 5Medium Racing Shoes ×100Satsuki Sho Winner's Sash ×30Japanese Derby Winner's Sash ×30Kikuka Sho Winner's Sash ×30Tenno Sho (Autumn) Winner's Sash ×30Dream Glimmer ×10
- Top Runner180 skill points
  Increase ability to pass or challenge another runner early-race or mid-race. (Front Runner)
  Target speed +0.35 m/s for 3 s

Support cards

More Medium / Long characters

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