Skill
Rune of Crystal (Lv. 1)
5 levels
Level 1
Decreases your grade penalty by 1 levels.
Level 2
Decreases your grade penalty by 2 levels.
Level 3
Decreases your grade penalty by 3 levels.
Level 4
Decreases your grade penalty by 4 levels.
Level 5
Decreases your grade penalty by 5 levels.