Love and Deepspace Team Building Guide: Myth Pairs, Solar and Lunar Slots

Every battle squad centers on one Companion — the love interest fighting alongside you — plus up to 6 Memory Cards belonging to that same Companion: a maximum of 2 in Solar slots and 4 in Lunar slots. You can't mix Memory Cards from different love interests into one squad.

• The Companion auto-attacks and blocks hits for you, and carries its own hidden HP bar — if the Companion goes down, the battle ends even if your own HP is still full.
• Your Companion's combat stats (ATK/DEF/HP) come from the Companion itself, not from the Memory Cards you equip.
• Memory Cards are what you pull for through Wishes and what carries the Pair Bonus and Protocore gear — think of them as the loadout you build around your chosen Companion.

Only 4-star and 5-star Solar Memory Cards carry a hidden two-letter pairing code (look for the Solar sun-crescent icon on the card). Put both cards sharing the same code, on the same Companion, into your 2 Solar slots and you activate a Pair Bonus. We cross-checked this against GameVika's own Memory Card database (409 cards synced from the game's official data) and confirmed every pairing code always links exactly 2 cards that share the same Companion, the same Stellactrum element, and the same buff type (ATK, DEF, or HP) — never mixed.

• Lunar cards never carry a pairing code — pairing is a Solar-only mechanic.
• 3 confirmed 4-star Solar cards currently have no matching partner: Xavier's Starry Witness, Zayne's End of Depths, and Rafayel's Fiery Undercurrents.
• If you only own one half of a pair, you still get to use that card normally — you just don't get the Pair Bonus until you pull or claim its other half.

Once both halves of a pair are on the field, the bonus scales up as you rank the pair from I to IV, and 5-star pairs give noticeably stronger effects than 4-star pairs at every rank. According to lads.wiki's breakdown (the only source we found with exact numbers, not yet cross-checked against a second source):

• Rank I — 5-star: +8% team DMG and -8% DMG taken on activation. 4-star: +5% team DMG.
• Rank II — 5-star: +20% Ardent Oath (ultimate) charge. 4-star: +10%.
• Rank III — 5-star: +1 Energy Charge cap. 4-star: -5% squad DMG taken.
• Rank IV — 5-star: +8% team DMG. 4-star: +5% squad DMG.

Ranking up a pair costs duplicates of the same card, so a Myth Pair you actually intend to keep using is usually worth ranking before you spread shards across cards you're unsure about.

Counting directly from GameVika's own Memory Card database (409 cards synced from the game's official Cargo data), there are 36 confirmed pairing codes in total: 21 linking 4-star cards and 15 linking 5-star cards. Split by love interest, Xavier, Zayne and Rafayel — the three characters present at the game's 2024 launch — each have 8 confirmed pairs, while Sylus (added mid-2024) and Caleb (added early 2025) each have 6 so far.

• This 15-pair count for 5-star cards is higher than the '10 total Myth' figure some 2025 English guides cite — those guides were counting only the narrative Myth-storyline pairs at that snapshot in time, before later patches added more 5-star pairs.
• The gap between the original 3 and the newer 2 love interests simply reflects how much longer Xavier/Zayne/Rafayel have been receiving new cards, not a design imbalance.

Lunar Memory Cards never carry a pairing code, so there's no Pair Bonus to chase in these 4 slots. Instead, match their Stellactrum element (Ruby, Violet, Emerald, Amber, Sapphire, or Pearl) to your Solar pair where you can — GameVika's own element system treats a shared Stellactrum element as a smaller resonance bonus, separate from the Pair Bonus itself.

• If you don't have enough same-element Lunar cards yet, prioritize rarity and card level over forcing an element match — a leveled 4-star beats an unleveled 5-star of the 'right' color.
• Don't confuse a Memory Card's Stellactrum element with your Companion's own Evol power (Xavier's Light, Zayne's Ice, Rafayel's Fire, Sylus's Energy, Caleb's Gravity) — they're two separate systems that happen to both get called 'element' in casual conversation.

If you're new and not sure where to start, here's a simple order to follow rather than spreading resources across every love interest at once.

• Pick the Companion whose story and combat style you enjoy most — you'll be leveling their gear the longest, so enjoyment matters as much as strength.
• Check which of that Companion's Solar pairs you already own both halves of; if none yet, target completing one pair through Wishes before chasing others.
• Fill the 2 Solar slots with your completed pair first, then fill the 4 Lunar slots with your highest-rarity, highest-level cards for that same Companion, favoring a shared Stellactrum element when it's close.
• Once your main squad is set, spend Protocore farming (Core Hunt) on gear for that same 6-card lineup before branching out to a second Companion.