This is Fuuko Amicus from Conception II.

Her base prompt:

c2fk0, pink hair, twintails, blue eyes,

There's also 3d samples in the dataset if you're curious to try.

Her default outfit:

school uniform, miniskirt, long sleeves, black thighhighs, headphones, twintails, blue necktie, pleated skirt, zettai ryouiki,

Her bikini outfit:

swimsuit, striped bikini, headphones, front-tie top, striped clothes, navel, blue eyes, side-tie bikini bottom, bikini skirt,

Her battle outfit:

battle suit, white thighhighs, elbow gloves, animal ear headphones, thigh holster, thigh boots, zettai ryouiki, cleavage cutout, bare shoulders,

dual wielding handguns,