Skip to main content
inzoicharactertraits

inZOI Single-Hearted Trait: The Loyalty Trait Explained

Updated

inZOI Single-Hearted Trait

Single-Hearted was added in the v0.9.0 update on June 19, 2026, as the deliberate counterpart to Philandering. Krafton introduced the two together to cover what it called "polarising romantic behaviours".

This is the devoted end of that spectrum: a Zoi built around one relationship rather than several.

What's confirmed​

  • Added in v0.9.0, June 19, 2026.
  • Introduced as a pair with Philandering.
  • Nothing was removed to make room, so this is an addition to the roster.

Krafton published full effect tables for the original 18 traits but has not done so for these two. Check the Zoi Card in game for the emotion tendencies and gauge modifiers rather than relying on a guess from us.

Where it fits​

The romance systems have been built out steadily, and a loyalty trait has more to interact with now than it would have at launch:

  • Marriage and divorce, with divorce added in v0.3.0.
  • Asking your spouse on a date, added in v0.7.0, which gives long-term couples something to do beyond maintenance.
  • Cheating consequences from v0.9.0: a sharp romance drop, a confrontation, and a chance to talk your way back.
  • "Comfort" and "Soothe" from October 2025, which shorten Sad and Enraged states and scale with Rhetoric.
  • Teen romance, expanded across v0.2.0 and v0.4.0, and made easier between similar age groups in v0.7.0.

Note that jealousy has historically triggered when a married Zoi witnesses their spouse being romantic with someone else, so the trait's practical weight likely depends on marital status. See relationships for how the four tracks work.

Who it suits​

A Single-Hearted Zoi fits a save centred on one long relationship: courtship, marriage, children, and growing old together. That's well supported now, between family trees from December 2025, inherited baby traits from June 2026 where parent behaviour shapes what a child becomes, and funerals from October 2025.

Pair it with Leader or Sentinel in a partner if you want a household built to last, since both build family relationships easily.

Compared to Charmer​

Charmer is still the trait with published romance mechanics: builds romantic relationships easily, frequently feels Aflutter, and stays Sad far longer than average.

Charmer gets you there faster. Single-Hearted is about what happens after you arrive, which is the part the game has spent the last year building out.

Getting it​

From the cheat console:

setTrait [ZoiID] [TraitID] [CharacteristicID] [CharacteristicID]

Run showZoiInfo true first to find the Zoi ID.

Traits also drift on their own since June 2026 when a Zoi repeatedly acts against them, so a devoted Zoi with another trait may drift into this one through play.

  • Philandering is the deliberate opposite, added in the same update.
  • Charmer is the documented romance specialist.
  • Leader and Sentinel both build family relationships easily.

See all traits for the full current list.

Related