Trust is a mechanic in Xenoblade Chronicles 2 and Torna ~ The Golden Country. It is used mainly for unlocking the five tiers of many Blade's Affinity Charts. Trust levels can be raised by reaching max Affinity in battle, giving Blades Pouch items, and completing Quests or a Heart-to-Heart (where different choices raise trust by varying amounts). Trust is measured in levels, starting from E, reaching S when a Blade's Affinity Chart is completed, and maxing out at S+. Higher trust leads to a higher Auto-Attack stat (which increases all damage), higher chance for Blade Arts occurring, and reduced Blade switch times, amongst other bonuses.
Trust levels from lowest to highest: E, D, C, B, A, S, S1, S2, S3, S4, S5, S6, S7, S8, S9, S+
For most rare Blades, excluding ones with specific key Affinity requirements, Trust levels must reach 9,800 before S rank can be reached. To reach S+, 49,200 more Trust must be gained, for a total of 59,000 Trust.
Trust levels scale the Blade's Auto-Attack stat as follows:
Trust levels multiply the damage of Blade Specials by the following: