This is a build guide for Seiun Sky (Reeling in the Big One) in Umamusume: Pretty Derby. Find out how to build Seiun Sky, her preferred tracks, distances, and style, as well as her basic character information, here!
| Seiun Sky Related Guides | |
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List of Contents
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Increase acceleration at an opportune moment when in the lead on a corner late-race. |
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Seiun Sky's Angling and Scheming is a strong acceleration skill that activates when she is positioned at 1st place on a corner during the late race.
This means it is most effective with Front Runners; those who can be positioned at the front immediately and are able to maintain a strong lead. The skill also becomes easier to trigger if there are no other Front Runners in the race.
It is important to note, however, that this requires you to be on a corner in the late race. If the race track does not have a corner during the late race, the skill will not activate.
| All Innate Skills |
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| Skill Per Potential Level |
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| Potential 2: Potential 3: Potential 4: Potential 5: |
| All Career Event Skills |
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Seiun Sky is considered one of the best Front Runners racers in the game and will remain strong for a long time. She is also an important Legacy for Front Runners, as her Unique Skill helps them keep their lead in the late race.
Pull for her if you own other Front Runners like Maruzensky and Silence Suzuka and want to strengthen them even further.
| Training Tips |
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When training Seiun Sky, use the brand new Unity Cup scenario to take advantage of the new Spirit Burst mechanic. This not only lets you gain more stats than normal, but can also provide useful Skill Hints.
Seiun Sky is a Front Runner through and through. This is because her more powerful skills, like Fast-Paced (and its upgrade Escape Artist) are both Front Runner skills. Additionally, her Unique Skill activates when she is in the lead in a late-race corner, so running her as a Front Runner makes it easier to activate it.
Make sure to improve her Front Runner aptitude from A to S using Legacies.
Because Seiun Sky primarily runs Medium and Long races, Speed and Stamina are both important, especially since she is running as a stamina-hungry Front Runner. Increasing both Speed and Stamina is a must if you want her to keep her lead at all times.
Of course, this doesn't mean that you should neglect Power, as you will still need some Power to help Seiun Sky reach her top speed and head to the front.
It is important to get Seiun Sky's Potential level to the max level as this unlocks the skill Escape Artist, which is a helpful mid-race velocity skill for Seiun Sky.
Seiun Sky will be part of your Medium team for Team Trials. As such, prioritize improving her Medium aptitude
You can do this by looking for Legacies that have Medium and Long sparks.
Seiun Sky needs to race in both the Kikuka Sho and the Tenno Sho (Spring) as part of her career races. To ensure that you perform well in both races, try to get at least 400 Stamina before the Kikuka Sho, and at least 500 Stamina before the Tenno Sho (Spring).
| 1200 | 800 | 800 | 400 | 400 |
As a Front Runner on your Medium team for Team Trials, Seiun Sky will need a lot of Speed and Stamina so that she can maintain her running speed throughout the entire race. Focus on increasing her Speed and Stamina first, before increasing her Power to help with her acceleration. Finally, increase Guts and Wit to round everything up.
If you are only planning to clear a career run with Seiun Sky, then you can aim for lower stat numbers, as the stats above are for Team Trials.
Training Guide: Which Stats to Train?
For Seiun Sky, we recommend a 3 Speed, 2 Power, 1 Pal deck. This will get you the Speed and Power you need, with the Stamina coming from Power training, Legacy Sparks, and Riko Kashimoto during her Career Events. Alternatively, you can also run a 2 Speed, 3 Wit, 1 Pal deck to maximize your training time.
Mihono Bourbon (The Ghost Finds Halloween Magic) is a particularly good Wit card as it gives you access to Taking the Lead. If you do not have Riko Kashimoto (Planned Perfection), you can instead use a fully uncapped Riko Kashimoto (Tracen Academy).
This deck is for players who are starting out and are still trying to get a feel of the game's mechanics and intricacies. This deck can help you get the needed stats to clear the career, while also providing important skills.
Take advantage of the game's borrowing feature to borrow a powerful MLB SSR, like Kitasan Black. Additionally, if you do not have an MLB copy of Riko Kashimoto (Tracen Academy), it would be better to use another SR Stamina card instead.
These cards will help Seiun Sky level her needed Stats (especially with Rainbow/Friendship Training), as well as provide some needed skills.
These stats are enough to clear the URA Finale easily, as they provide enough Speed, Stamina, and Power for all of Seiun Sky's career races, especially when partnered with the correct skills.
As for the deck, run a 3 Speed, 2 Power, 1 Wit deck to help Seiun Sky get the stats that she needs.
| Recommended | |
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| 12★ Stamina 6★ Power |
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| 3★ Front Runner 3★ Medium |
For Legacy Sparks, we recommend trying to find Stamina and Power sparks to help with Seiun Sky's races. As she already has an A aptitude for the races in her career, getting Medium to push her aptitude to S is the ideal move, as this will help her in Team Trials.
For running style, Front Runner sparks are the best choice, as you will not be running Seiun Sky in any other running style.
You can use either your own Veterans, or borrow the ones from your friends. If you do not have Veterans with full sparks, you can go with whatever you have access to.
| Recommended Skills | ||
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Focus
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Up-Tempo
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Front Runner Corners ◯
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Medium Corners ◯
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Front Runner Savvy ◯
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Groundwork
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Playtime's Over!
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Professor of Curvature
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Taking the Lead
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Swinging Maestro
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Escape Artist
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As a Front Runner, Seiun Sky benefits from skills that let her get to the front of the pack and keep her position. Speed skills like Taking the Lead will help her go to the front early, and can activate Groundwork alongside Focus and Front Runner Savvy.
During the mid-race, skills like Escape Artist and Up-Tempo will provide velocity boosts alongside corner skills like Professor of Curvature and Front Runner and Medium Corners. Playtime's Over! can also be useful, especially since Seiun Sky will be in the front.
As for recovery skills, Swinging Maestro will be your best pick, although other Front Runner recovery skills like Moxie or Restless are good if you can get them.
If you cannot get the recommended skills, you can replace them with similar skills that you have access to. You will just need to make sure that Seiun Sky can activate said skills in a race. Additionally, if you are not able to get hints for a Skill's upgraded version, getting the base version will still be helpful for your runs.
| Choice | Outcome |
|---|---|
| Choice 1 | ・ 20 Wit |
| Choice 2 | ・ 20 Stamina |
| Choice | Outcome |
|---|---|
| Choice 1 | ・ 20 Guts |
| Choice 2 | ・ 20 Speed |
| Choice | Outcome |
|---|---|
|
Choice 1
(Thank you.) |
・ 20 Stamina ・ Charming ◯ (Random) |
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Choice 2
(I've gotta work harder.) |
・ 20 Power ・ Charming ◯ (Random) |
| Choice | Outcome |
|---|---|
| Choice 1 | ・ 10 Wit |
| Choice 2 | ・ 10 Speed |
| Choice | Outcome |
|---|---|
| Choice 1 | ・ 10 Stamina |
| Choice 2 | ・ 10 Guts |
| Choice | Outcome |
|---|---|
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Choice 1
(That solves that.) |
・ 10 Guts |
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Choice 2
(So the source of the temptation was none other than...) |
・ 10 Speed |
| Choice | Outcome |
|---|---|
| Choice 1 | ・ 10 Wit |
| Choice 2 | ・ 10 Stamina |
| Choice 3 | ・ 10 Power |
| Choice | Outcome |
|---|---|
| Choice 1 | ・ 10 Stamina |
| Choice 2 | ・ 10 Wit |
| Choice | Outcome |
|---|---|
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Choice 1
(Wait, are you taking this seriously?) |
・ 10 Guts |
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Choice 2
(A little more effort and you can get the win!) |
・ 10 Stamina |
| Choice | Outcome |
|---|---|
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Choice 1
(Don't eat too many!) |
・ 10 Energy ・ 5 Skill Pts |
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Choice 2
(Success)
(It's hard to stop once you start, right?) |
・ 30 Energy ・ 10 Skill Pts |
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Choice 2
(Fail)
(It's hard to stop once you start, right?) |
・ 30 Energy ・ -5 Speed ・ 5 Power ・ 10 Skill Pts ・ Slow Metabolism |
| Choice | Outcome |
|---|---|
| Choice 1 | ・ 10 Stamina |
| Choice 2 | ・ 10 Wit |
| Choice | Outcome |
|---|---|
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Choice 1
(Let's try deception...) |
・ 10 Speed ・ 15 Skill Pts |
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Choice 2
(Use your front runner skills.) |
・ Subdued Late Surgers +1 Skill Hint |
| Choice | Outcome |
|---|---|
| Choice 1 | ・ 10 Speed |
| Choice 2 | ・ 10 Power |
| Choice | Outcome |
|---|---|
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Choice 1
(Random 1)
(Insist that she practice) |
・ 25 Speed |
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Choice 1
(Random 2)
(Insist that she practice) |
・ -1 Mood ・ 5 Speed |
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Choice 2
(Random 1)
(Let her rest until she's happy.) |
・ 20 Energy ・ Deep Breaths +1 Skill Hint |
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Choice 2
(Random 2)
(Let her rest until she's happy.) |
・ 10 Energy ・ Slacker |
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Choice 3
(Train after a little relaxing.) |
・ 5 Energy ・ 5 Speed |
| Choice | Outcome |
|---|---|
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Choice 1
(Strategy training to prepare for the third-corner hill.) |
・ 10 Power |
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Choice 2
(Perseverance training to pull ahead in the last stretch.) |
・ 10 Guts |
| Choice | Outcome |
|---|---|
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Choice 1
(Yep! Training!) |
・ 10 Speed |
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Choice 2
(How about a cup of tea for our meeting?) |
・ 20 Energy |
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Choice 3
(Tell me more about Nishino Flower.) |
・ 20 Skill Pts |
| Choice | Outcome |
|---|---|
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Choice 1
(Pray that she refrains from overworking herself.) |
・ 30 Energy |
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Choice 2
(Pray that she achieves great success.) |
・ 5 All Stats |
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Choice 3
(Pray that she can enjoy her races.) |
・ 35 Skill Pts |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ 10 Energy ・ -2 Mood ・ Last trained stat and two other random stat -10 ・ Practice Poor (random) |
| Choice 2 (Success) | ・ Practice Perfect ◯ |
| Choice 2 (Fail) |
・ -3 Mood ・ 3 Random stat -10 ・ Practice Poor |
| Choice | Outcome |
|---|---|
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Choice 1
(Why don't you do some running together?) |
・ -5 Energy ・ Last trained stat +5 ・ 5 Friendship with Director |
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Choice 2
(True. It's important to take good care of your body.) |
・ 5 Energy |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -1 Mood ・ Last trained stat -5 ・ Practice Poor (random) |
| Choice 2 (Success) | ・ Practice Perfect ◯ |
| Choice 2 (Fail) |
・ -1 Mood ・ Last trained stat -10 ・ Practice Poor (random) |
| Choice | Outcome |
|---|---|
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Choice 1
(It wasn't a bad strategy.) |
・ -25 Energy ・ 25 Skill Pts ・ Random Stat +4 |
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Choice 2
(Success)
(We'll get them next time!) |
・ -15 Energy ・ 25 Skill Pts ・ Random Stat +4 |
|
Choice 2
(Fail)
(We'll get them next time!) |
・ -35 Energy ・ 25 Skill Pts ・ Random Stat +4 |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -25 Energy ・ 20 Skill Pts ・ Random Stat +3 |
| Choice 2 (Success) |
・ -15 Energy ・ 20 Skill Pts ・ Random Stat +3 |
| Choice 2 (Fail) |
・ -35 Energy ・ 20 Skill Pts ・ Random Stat +3 |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -25 Energy ・ 20 Skill Pts ・ Random Stat +3 |
| Choice 2 (Success) |
・ -15 Energy ・ 20 Skill Pts ・ Random Stat +3 |
| Choice 2 (Fail) |
・ -35 Energy ・ 20 Skill Pts ・ Random Stat +3 |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -25 Energy ・ 10 Skill Pts |
| Choice 2 (Success) |
・ -15 Energy ・ 10 Skill Pts |
| Choice 2 (Fail) |
・ -35 Energy ・ 10 Skill Pts |
| Choice | Outcome |
|---|---|
|
Choice 1
(It wasn't a bad strategy!) |
・ -20 Energy ・ 45 Skill Pts ・ Random Stat +8 |
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Choice 2
(Success)
(Let's really blow their socks off in the next one.) |
・ -10 Energy ・ 45 Skill Pts ・ Random Stat +8 |
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Choice 2
(Fail)
(Let's really blow their socks off in the next one.) |
・ -30 Energy ・ 45 Skill Pts ・ Random Stat +8 |
| Choice | Outcome |
|---|---|
|
Choice 1
(It wasn't a bad strategy!) |
・ -20 Energy ・ 35 Skill Pts ・ Random Stat +5 |
|
Choice 2
(Success)
(Let's really blow their socks off in the next one.) |
・ -10 Energy ・ 35 Skill Pts ・ Random Stat +5 |
|
Choice 2
(Fail)
(Let's really blow their socks off in the next one.) |
・ -30 Energy ・ 35 Skill Pts ・ Random Stat +5 |
| Choice | Outcome |
|---|---|
|
Choice 1
(It wasn't a bad strategy!) |
・ -20 Energy ・ 35 Skill Pts ・ Random Stat +5 |
|
Choice 2
(Success)
(Let's really blow their socks off in the next one.) |
・ -10 Energy ・ 35 Skill Pts ・ Random Stat +5 |
|
Choice 2
(Fail)
(Let's really blow their socks off in the next one.) |
・ -30 Energy ・ 35 Skill Pts ・ Random Stat +5 |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -20 Energy ・ 30 Skill Pts ・ Random Stat +3 |
| Choice 2 (Success) |
・ -10 Energy ・ 30 Skill Pts ・ Random Stat +3 |
| Choice 2 (Fail) |
・ -30 Energy ・ 30 Skill Pts ・ Random Stat +3 |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -15 Energy ・ 45 Skill Pts ・ Random Stat +10 |
| Choice 2 (Success) |
・ -5 Energy ・ 45 Skill Pts ・ Random Stat +10 |
| Choice 2 (Fail) |
・ -20 Energy ・ 45 Skill Pts ・ Random Stat +10 |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -15 Energy ・ 35 Skill Pts ・ Random Stat +8 |
| Choice 2 (Success) |
・ -5 Energy ・ 35 Skill Pts ・ Random Stat +8 |
| Choice 2 (Fail) |
・ -20 Energy ・ 35 Skill Pts ・ Random Stat +8 |
| Choice | Outcome |
|---|---|
| Choice 1 |
・ -15 Energy ・ 35 Skill Pts ・ Random Stat +8 |
| Choice 2 (Success) |
・ -5 Energy ・ 35 Skill Pts ・ Random Stat +8 |
| Choice 2 (Fail) |
・ -20 Energy ・ 35 Skill Pts ・ Random Stat +8 |
| Choice | Outcome |
|---|---|
|
Choice 1
(You were amazing!) |
・ -15 Energy ・ 30 Skill Pts ・ Random Stat +5 |
|
Choice 2
(Success)
(We've got to come up with a strategy for the next race.) |
・ -5 Energy ・ 30 Skill Pts ・ Random Stat +5 |
|
Choice 2
(Fail)
(We've got to come up with a strategy for the next race.) |
・ -20 Energy ・ 30 Skill Pts ・ Random Stat +5 |
| Condition | Win the Satsuki Sho, Japanese Derby, and Kikuka Sho |
|---|---|
| Event Time | Classic Year Late October |
| Event Rewards |
・ Mood +1 ・ Speed +5 ・ Power +5 ・ Fast-Paced hint +2 |
| Race(s) to Win | |
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Satsuki Sho
| 2000m (Medium)
Early April, Classic Year Japanese Derby (Tokyo Yushun) | 2400m (Medium) Late May, Classic Year Kikuka Sho | 3000m (Long) Late Oct, Classic Year |
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The Landed That Triple Crown! Secret Event requires Seiun Sky to win the Satsuki Sho, Japanese Derby, and Kikuka Sho, all of which are part of her career. To maximize your chances of winning, especially in the Kikuka Sho, make sure that she has enough Stamina for the entire race. Getting at least 400 Stamina before the Kikuka Sho should help improve your chances of winning.
Racing in the Kyoto Daishoten with Seiun Sky will trigger the Secret Event East vs. West. This event has no special benefits, and is mostly for story purposes.
| Goal | Race/Goal |
|---|---|
| Run in Junior Make Debut | Junior Make Debut |
| Earn 3000 Fans | 3000 or above Junior Year Early Dec |
| Place top 5 in Satsuki Sho |
Satsuki Sho
(Medium - 2000m) Classic Year Early Apr |
| Place top 5 in Japenese Derby |
Japanese Derby (Tokyo Yushun)
(Medium - 2400m) Classic Year Late May |
| Place top 3 in Kikuka Sho |
Kikuka Sho
(Long - 3000m) Classic Year Late Oct |
| Place top 3 in Arima Kinen |
Arima Kinen
(Long - 2500m) Classic Year Late Dec |
| Place top 3 in Tenno Sho (Spring) |
Tenno Sho (Spring)
(Long - 3200m) Senior Year Late Apr |
| Place top 3 in Takarazuka Kinen |
Takarazuka Kinen
(Medium - 2200m) Senior Year Late Jun |
| Place 1st in Tenno Sho (Autumn) |
Tenno Sho (Autumn)
(Medium - 2000m) Senior Yar Late Oct |
| Place 1st in Arima Kinen |
Arima Kinen
(Long - 2500m) Senior Year Late Dec |
Seiun Sky"Hey now, why don't we take it easy? Tortoise and the hare and all that." | Voice Actress | Akari Kito |
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| Height | 155cm / 5'1" | |
| Weight | Undeclared | |
| Birthday | Apr 26 | |
| Three Sizes | B 77 | W 55 | H 80 | |
| As one of the most easygoing girls you'll meet, she lives life at her own pace. But on the inside, she's quite the schemer, and her laziness is just an act to get others to let down their guard... sometimes. Her hobbies include taking afternoon naps and fishing. She also loves cats and is often seen curling up with them outside on the grass. She's classmates with Special Week. | ||

| Height and Weight | Voice Actors | Three Sizes | List of Birthdays |
| 3-Star Characters | 2-Star Characters | 1-Star Characters |
Seiun Sky (Reeling in the Big One) Build Guide and Character Info



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