[Wings] Wings - Wing Soul Upgrade
Wing Soul Upgrade content can be found in the lower right corner of the game screen in [Warrior's Aegis] > [Wings] > [Wing Soul Upgrade].
Wing Upgrade content opens after reaching Master Lv. 350.
All tiers and grades of Wing Soul can be upgraded.
Upgrading Wing Soul grants you enormous Soul Upgrade options.
Upgrading Wing Soul requires Flame items such as Faint White Flame as materials.
The materials for upgrading Wing Soul can be obtained through Daily Packages.