C1: Factor Confluence

The Soulwind state of Starfrost Swirl can decrease the healing interval between instances caused by Skyfeather Song's Eagleplume state. This decrease percentage is equal to the ATK SPD increase provided by Soulwind.

C2: Companion's Ingress

When Starfrost Swirl's Flowfrost Arrow first hits an opponent, or its Rimestar Flare hits an opponent, 1 Detector stack from the Ascension Talent "Suppressive Barrage" will be generated.
You must first unlock the Ascension Talent "Suppressive Barrage."

C3: Reconnaissance Experience

Increases the Level of Skyfeather Song by 3.
Maximum upgrade level is 15.

C4: Sunfrost Encomium

When Mika's own Skyfeather Song's Eagleplume state heals party members, this will restore 3 Energy to Mika. This form of Energy restoration can occur 5 times during the Eagleplume state created by 1 use of Skyfeather Song.

C5: Signal Arrow

Increases the Level of Starfrost Swirl by 3.
Maximum upgrade level is 15.

C6: Companion's Counsel

The maximum number of Detector stacks that Starfrost Swirl's Soulwind can gain is increased by 1. You must first unlock the Ascension Talent "Suppressive Barrage.".
Additionally, active characters affected by Soulwind will deal 60% more Physical CRIT DMG.