Nagara from Kantai Collection is available.
For the output model, I recommend “ebara pony” which can be downloaded at hugging face, or "boleromix(Pony)",“White Unicorn” which can be found at Civitai.
Base : nagarakc, black hair, short hair, one side up, brown eyes, headband
Default outfit : nagaradefkc, brown sailor collar, serafuku, bare shoulders, detached sleeves, red skirt, miniskirt, pleated skirt, white thighhighs, shoes
Yukata outfit (experimental) : nagarayukatakc, print_kimono, white kimono, wide sleeves, red obi, blue sash, sandals, hair ribbon, white ribbon ( If necessary, "tan" in prompt.)