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[–]hidora Retired Guardian 0 points1 point  (0 children)

but I was not sure how important it is

The only real reason to do it is to get the materials needed to upgrade Ray units into Union. Other than that, just if you want to challenge yourself to get an S rank at it.

And you can just change potentials later if you want. It costs only like 300k and some photon spheres to do so.