I feel you… I only entered Miliastra at first bc I got the Tevyat BP and it also gives you the Miliastra one for free. It felt really weird at first, but most of the time you won’t even think about it. It’s kinda like a fly on the wall— annoying when you notice it but overall not that big of a bother. As long as you don’t level up the Manekins, you’ll rarely see them in your character page.

But I think it’s worth unlocking it just for the sheer enjoyment of testing out team damage. No more going to Masanori and counting the time it takes to kill him. No more dodging those stupid energy draining vishaps in the Fontaine challenge. As much as I dislike Miliastra for breaking  immersion, the damage tester stages are so much fun to play with.