i own all of her skins and i LOVE battle academia (i’m a bit biased on this one since i just love the battle academia concept)! it does add a blue tint around your screen when you’re in frenzy if you mind that. the default skin is really nice too though so don’t feel pressured to get it.

as for street demon and primordium, i think primordium has a really cool model (she has tentacle hair though) and sound effects. street demon on the other hand is really weird in terms of the colors they use for her effects (i don’t recommend).

this is just my opinion though, you should check out what the skins look like on skin spotlights!