Whenever the character’s Combat Lv. increases, a skill point which can level up the skill and upgrade the ability is earned.
The skill point can be used through [K] or the bottom right quick menu [Character] > [ Skill].
Skills level 4 or higher can be changed into special forms and upgraded via Skill Tree Edit.
Skill Lv. and Skill Tree settings can be edited and saved with the + or – button on the bottom of the skill’s level.