Ascension

Ascension, also known as star ranking, is one aspect of ally progression. Use coins and the corresponding Essence Fragments (and for the 5th ascension) to raise the star ranking of the player allies. Certain passive skills can only be unlocked through ascensions, and battle skills can only be upgraded through ascensions.

Upgrade cost
270 Essence Fragments, up to 800,000 Coins, and up to 2 Crystal Cores are required to reach 5.