Rune of Affection is a water-elemental master arts introduced in the Trails Universe from Ao no Kiseki.
With a Water Master Quartz installed, the user calls upon the power Water Sept-Terrion to activate the art. The caster is enclosed within a glowing circle outline being the central core of the magic circle surrounding the entire battlefield.
As the caster remains in place to preserve the circle, all party members recover 50% of their HP upon the art's activation. In addition, all damage receives is reduced by half.