The girls look somewhat similar to the nekos from Serenity, especially Natalie and Kalina who both remind me of Lena and Rin respectively.
I personally have always liked when there are similarities between characters from one game and another, it brings this weird feeling of familiarity. I noticed some subtle changes in the looks of the girls in Serenity (or there were none and I'm just dumb), but I do hope these are the final designs of the nekos here in LH.