Hello
I'm new at Kamihime and I have attempt this event.
I manage to beat the beginner and standard battle and i think i can gather enough material to collect one vitra.

My question is the following:
Is it worth it or should I target something else in the exchange grid?
Im not sure I can gather for a second one and if I understand correctly the event, after it is finish i wont be able to gather the other vitra necessary to break the limit of this one.
So what is the best course of action for a beginner in the short run and in the long run?

Thank you.

(PS my Eidolon at the moment are:
Main: Melusine Lv40, 1 break limit
Sub: Radon Lv30, no break limit
Sub: Sephiroth Lv30 no break limit
Sub: Yinglong Lv30 no break limit
Sub: Salamander Lv32 1 break limit
Sub: Dullahan Lv38 No break limit
And Im playing water)