Success in Star Sailors depends far more on which Partners you commit to than on how many you own. With 23 summonable characters split into Battle Partners on the front line and Assist Partners in the back, spreading your resources thin is the fastest way to stall out. The early game rewards one thing above all else: picking a single strong elemental core and building the whole team around it.
Quick answer: Reroll or aim for Heidi (Fire) or Nina (Earth) as your first damage dealer, pair them with Jen or Kaira as your anchor, and add Gerbil or Hunter K as support. Commit every upgrade material to one element instead of splitting across several.
Why Fire and Light lead the early meta
The current roster leans heavily on Fire and Light. Fire gives you the cleanest damage stacking because Heidi, Jen, and Carat reinforce each other without needing a fourth specific piece. Light does the opposite job well, letting Kaira, Iris, and Ethan cover healing and damage from overlapping slots, which frees a seat for whatever coverage your team still lacks.
Water, Wind, and Earth are not weak, but they demand more specific pairings before they match a straight Fire or Light core. Earth is the notable exception at the top end, since a Nina, Hunter K, and Jerry setup can rival Fire output once all three pieces are online.
Elemental advantage still matters in every fight. Fire beats Wind, Wind beats Earth, Earth beats Water, Water beats Fire, and Light and Dark counter each other. Hitting an enemy’s weakness breaks its Tenacity faster, opening the Burst windows that end fights quickly. Early story chapters lean on Wind, Dark, and Water enemies, so a Fire or Light Adventurer gives you favorable matchups through most of the opening battles.
The Fire core: Heidi, Jen, and Carat
This is the most self-contained lineup in the game and the easiest for new players to run. Heidi is the AoE damage standard, hitting multiple targets on nearly every skill and pushing her ATK bonus as high as 220 percent with added crit rate on her ultimate. She clears waves fast and keeps scaling into later content without a ceiling.
Jen is the anchor that holds the whole team together. She converts her own defense into team-wide damage reduction, strips enemy buffs to break boss defenses, and heals up to 20 percent of the team’s max HP through her ultimate. She protects your damage dealers while they build chains, which is exactly why the Fire core dominates so many lineups.
Carat rounds it out as a rare free-to-play S-tier option. Her three-hit burst deals roughly 330 percent ATK and scales cleanly from early to late game, so she covers the gap if your Heidi pulls miss. She also pairs surprisingly well with Wind supports like Mui.
The Earth boss-killer: Nina, Hunter K, and Jerry
When you need to burn down a single boss instead of clearing waves, Earth is the answer. Nina is the premier single-target eliminator. Her Hook Shot into Checkmate combo delivers heavy burst, and she self-buffs her crit rate as she goes, so a well-timed turn can end a boss phase outright.
Nina only reaches her real ceiling with Hunter K in the Assist slot. He boosts team crit rate, triggers auto-attacks on ally turns, and recovers SP for the whole squad. His kit reads as generic, but he is the engine behind every serious Earth bossing team, so do not bench him. Jerry completes the core with off-field Earth AoE and chain amplification. Build him only once you already have the Nina and Hunter K duo, since he is weak in isolation.
The Light hybrid: Kaira, Iris, Gerbil, and Ethan
Light teams solve the classic problem of needing sustain without giving up a damage slot. Kaira offers spot healing, team-wide HP restoration through her ultimate, and up to 15 percent ATK buffs for allies. She slots into Fire or Light comps equally well, so she is never a wasted investment.
Iris is a free damage source that never dies. As an Assist Partner, she cannot be targeted, and her Brute Strike scaling rewards crit investment, giving you steady off-field output while your active team handles everything else. Gerbil handles defense stripping from the backline, which becomes essential once high-tier bosses start eating your damage through their own reduction. He also chips in meaningful off-field damage. Ethan works as a solid free Light attacker for early clears, shielding himself as he deals single-target damage, though premium picks eventually outscale him.
Free and starter units to use as bridges
Several units appear constantly in starter summons and story rewards. They keep you moving through the first few chapters, but resist over-investing in them because they fall off once your gacha luck improves.
| Unit | Role | How to use it |
|---|---|---|
| Rak (Fire) | Defender | Early Midnight tank; struggles in long or AoE-heavy fights where Jen thrives. |
| Soul (Fire) | Attacker | Decent early bossing, but needs careful HP upkeep and falls off mid-game. |
| Remi (Earth) | Defender | Free starter tank with a team shield that does not scale. |
| Iron (Earth) | Defender | Functional through the first several chapters, then replaceable. |
| Carat (Fire) | Attacker | The exception; a free unit worth keeping and building long-term. |
Field these units while you need bodies on the roster, then swap them out for S or A tier picks as soon as you pull them.
Reroll and build priorities for a new account
Follow the priority order that keeps a lineup functional: a chain-building main damage dealer such as Heidi or Nina, an anchor with healing or protection like Jen or Kaira, a debuffer such as Gerbil, and finally off-field damage from Iris or Hunter K.
How to know your early team is working
A properly built core clears story chapters without repeated wipes and finishes bosses inside their damage windows. If runs collapse because your healer dies before the boss does, your anchor is under-leveled or missing entirely, and adding Jen or Kaira usually fixes it. If a tanky boss survives despite strong gear, you are almost always missing a defense stripper like Gerbil.
Prioritize EXP farming to level your Battle Partners first, since character levels give the largest jump in combat power. Activate matching gear set bonuses rather than chasing perfect sub-stats early, and manage SP in combat by breaking enemy shields before spending it on your biggest skills. Balance patches can shift these rankings, so check the in-game notices when the meta moves, but a committed Fire, Earth, or Light core will carry a new account through the entire early game.
