[Skill] Skill Promotion

By promoting skills, you can acquire upgraded skill effects and additional options.

After the acquisition and [Promotion] of certain skills, you can acquire powerful additional options and cool skill effects.
Special material items are required for [Promotion], and these items can be acquired at the Diamond and VIP Shops.

※ Skill promotion is possible only after the corresponding skill is acquired.
※ Skills that have been promoted remain intact even if the skill is reset.