How to "train valflame more" ? How to overcome pink crystal in dungeon?

[OutlawStar]

Hello, I have encountered this pink crystals inside dungeon that are blocking my way to some treasures.
Heroine says "Maybe if I train valflame more I might be able to break it".
So what is this Valflame? Where do you get it? I cant find anything like that in a skill tree.

[OutlawStar]

Ok, so Valflame is a magical sword that can be crafted at blacksmith. Question is what lvl of that sword do I need.
Valflame +1 or +2 or +3 or Valflame Supreme ?

[electronpools]

You have to upgrade it one level at a time, and the items on the right are the requirements. The first time you do, you'll end up with the Valflame + 1 which enables you to upgrade to level 2. Rinse and repeat.