First anime I ever watched so thought I'd make at least one lora from it now that I am getting the hang of how it's done. Hopefully I am not the only fan on this site >.<
V1:

Had to cook it a bit more than for a normal character lora so that it could reproduce her outfit somewhat reliably, and keep some of the aesthetic from the show. This allows for style and outfit use, but limits style flexibility somewhat, so you might need to put outfit tags in the negative if you do not want them bleeding in, and use at lower weight if you want to change style.

If outfit still bleeds, can try also adding "belt, collar, cuffs, scarf," etc in the negative depending on what is bleeding. The only common thing I have seen to still bleed with outfit tags in the negative is the bit around her neck as the model seems confused if that is part of her hat or suit. I will try to fix that if/when I get around to making a v2.

Main trigger words are:

ryviusNeya, ->neya herself, with most of her default outfit if no other outfit info is given in prompt.

neyasuit, neyagloves, neyaboots, neyahat -> trigger words for various parts of her outfit

May also want to use:
high ponytail, hat -> in combination with neyahat to get more consistency with her headwear, ("hat might produce some awkwardness, so try with just high ponytail first) OR
long hair, -> for consistency with her non-hat appearance

"pink skirt" can be used in positive or negative to try get that half skirt bit on her suit to show or be removed, but it is a bit inconsistent as I was trying to just train it into her suit instead of as a separate piece. Again will try to make this a separate element if/when I make a v2.

A NOTE ABOUT EYES:
as I had to use full body screencaps to get her outfit right, default eye quality degraded. To fix this try putting some (or all) of: "(red eyes, black pupils, gradient eyes)," in the POSITIVE and "blank eyes, broken, hollow eyes, heart shaped pupils, no pupils" in the NEGATIVE, if whatever pony merge you are using struggles to get them right.

Hope you like it!

Neya from Infinite Ryvius - v1.0