Corvin's errands

Corvin's errands are a series of tasks given through 's Light Mastery's requirements. For the encounters to be available, Corvin must be in the party along with the characters specified on the Affinity Chart node's requirements. Completing each one of the four encounters will unlock their corresponding level of Light Mastery, from level 2 up to 5, and reveal the requirements for his and Battle Skill nodes of the same level, along with the Forestry and Ancient Wisdom nodes of the same level, if there are any.

Hear out Elaria
Elaria can be found near Waypoint Market in Garfont Village, Kingdom of Uraya, provided Corvin and Nia are in the party. Completing this encounter unlocks the second level of Corvin's Light Mastery and reveals the requirements for his Special and Battle skill nodes of the same level and his first level of Forestry.

Hear out Kitson
Kitson can be found near Messet Point on Fonsett Island, Leftherian Archipelago, provided Corvin and Rex are in the party. Completing this encounter unlocks Light Mastery's third level and reveals the requirements for Corvin's Special and Battle Skill nodes of the same level and Forestry's second level.

Hear out Phyllistrata
Phyllistrata can be found on the lowest level of Theospiti Temple Ruins in Theosoir, Kingdom of Tantal, provided Corvin and Zeke are in the party. Completing this encounter unlocks Light Mastery's fourth level and reveals the requirements for Corvin's Special and Battle Skill nodes of the same level and Ancient Wisdom's second level.

Hear out 8th Decade Sergeant
The 8th Decade Sergeant can be found at Hardhaigh Palace (location) in Hardhaigh Palace, Empire of Mor Ardain, provided Corvin and Mòrag are in the party. Completing this encounter unlocks Light Mastery's fifth level and reveals the requirements for Corvin's Special and Battle Skill nodes of the same level and Ancient Wisdom's third level.