Ore no Imouto ga Konna ni Kawaii Wake ga Nai Kuroneko/Gokou Ruri 1/4.5 PVC Figure (PVC Figure) - HobbySearch PVC Figure Store

What material is the swimsuit? Worth it? Cast off?

So many questions!

My guess is she's a cast off.

Since the swimsuit is cloth, it's probably safe to say it's removable (can't say what's underneath ...). As for the sculpt - sorry, I feel this is a miss. The added detail to the face doesn't quite work IMO (probably won't work for any other char from this series either). Somehow, it doesn't work as well as Kazami Hatsuho or others, probably because we're used to this face having so little "feature depth" (pronounced nose, lips, etc.) to begin with.

(continued) The extra detail added to the lips clashes with her almost nonexistent nose, making her face look strange to my eyes. Other figures of this character (like from Kotobukiya) kept the level of detail the same as the manga (anime too? ) so the conflict doesn't exist there.

The nose I can live with, but the mouth is what royally screws up what is an otherwise excellent face. I'll have to pass. I don't think even 1 figure will sell, and I bet we'll see a huge price drop in the near future.
I won't buy it even if it's 90% off.

The cloth is made out of the same fabric used to make school swimsuits, according to the info. And in Amiami, this item is listed as "non-cast off". So I'm assuming the swimsuit cloth cannot be removed. (Unless u rip it or something)