[Tracen Academy] Seiun Sky

R Stamina

Analysis

Tier D. A bare-bones R stamina filler with a tidy recovery skill kit. Fine for your opening Career runs, benched the second any SR or SSR stamina card shows up.

This is the plain R version, a Stamina starter with no unique effect and zero training events. The stat line is textbook R fare. Friendship Bonus caps at 20%, Mood Effect at 25%, Race Bonus sits at 5%, Fan Bonus at 10%, and shared training nets you exactly +1 Stamina at Lv40. One point. That’s the killer. SRs and SSRs pile a real Stamina Bonus onto stronger friendship scaling, so once you own anything better this card barely moves your stamina at all.

The skill kit saves it from being totally useless. Specialty Priority maxes at 50, high enough that it lands on the stamina tile and rainbows when you need it. Distance runners get a nice hint pool here too: Long Shot, Trick (Front), Frenzied Late Surgers, and Tail Held High, with Keeping the Lead handed over as an event grant. Good positioning and recovery coverage for something free.

So it’s bottom of the stamina pile. Every SR option beats it, and even the cheap ones win on raw stat gain plus limit-break payoff. Run it only when your stamina bench is empty in early Career and you just want the priority and a couple of hints.

• Pros: 50 Specialty Priority, strong distance-skill hints, costs nothing.
• Cons: +1 Stamina is a rounding error, no unique, no events, any SR replaces it.

Card details

Field	Value
Character	Seiun Sky
Rarity	R
Type	Stamina
Obtain	Gacha
Global release	Jun 26, 2025
Hint skills	Inner Post Proficiency ○, Long Shot ○, Trick (Front), Frenzied Late Surgers, Hesitant Pace Chasers, Tail Held High
Event skills	Keeping the Lead

Support effects

Effect	What it does	Values
Friendship Bonus	Increases the effectiveness of Friendship Training	Lv1: 5%, Lv20: 15%, Lv40: 20%
Mood Effect	Amplifies the effect of mood when training together	Lv5: 10%, Lv15: 15%, Lv35: 25%
Stamina Bonus	Increases Stamina gain when training together	Lv40: 1
Initial Friendship Gauge	Increases initial Friendship Gauge when beginning a Career playthrough	Lv5: 10, Lv15: 15, Lv35: 20
Race Bonus	Increases stat gain from races	Lv5: 1%, Lv35: 5%
Fan Bonus	Increases fan gain from races	Lv5: 1%, Lv15: 5%, Lv35: 10%
Specialty Priority	Increases the frequency at which the character participates in their preferred training type	Lv1: 5, Lv20: 35, Lv40: 50