Gear Sets Guide
The 4-piece gear system, main/sub stats, and how 2/3/4-piece set bonuses stack.
Every combatant has four gear slots — Top, Belt, Bottoms, and Boots — each piece carrying one main stat and several rollable sub stats, similar to a relic/artifact system. Pieces belong to a named gear set, and wearing 2, 3, or 4 pieces of that same set unlocks progressively stronger set bonuses, so plan a full build around one or two sets rather than mixing pieces at random.
The 4 gear slots
Top, Belt, Bottoms, and Boots each hold one gear piece. A piece's main stat is fixed to its slot type in most systems of this kind (for example a specific slot tends to roll offense-leaning or defense-leaning stats) — always check the piece's own stat panel in-game rather than assuming, since exact per-slot stat pools should be read off the actual item, not guessed.
Main stat vs sub stats
The main stat is set (and usually larger) when a piece drops, while sub stats are the smaller rolls that can be re-rolled or upgraded as the piece levels up. When comparing two pieces of the same slot, weigh the main stat first for build direction, then use sub stats to fine-tune toward the combatant's actual needs (crit, survivability, or utility depending on role).
Reading 2/3/4-piece set bonuses
Set bonuses stack by piece count: a 2-piece bonus is usually a flat stat boost, while 3 and 4-piece bonuses tend to add conditional passives that trigger in combat (for example on skill use or when a threshold is met). Check each set's own gear set entry for its exact bonus text rather than assuming it matches another game's convention.
Farming and upgrading gear
Gear pieces drop from dedicated gear stages/dungeons rather than the main story alone, so revisit those modes once your story-clear rewards slow down. Upgrading a piece's level raises its main stat and periodically unlocks a sub-stat roll — prioritize upgrading the pieces of the set you've committed to over spreading resources across several unfinished sets.