firefly (honkai: star rail), firefly (spring missive) (honkai: star rail), honkai: star rail, honkai (series), absurdres, highres, 1girl, black hairband, black ribbon, blush, bow, bowtie, buttons, closed mouth, double-breasted, gradient eyes, gradient hair, green bow, green bowtie, green pupils, grey hair, grey sailor collar, grey skirt, hair between eyes, hair intakes, hair ornament, hair ribbon, hairband, hands on own face, long hair, multicolored eyes, multicolored hair, plaid bow, plaid bowtie, plaid clothes, pleated skirt, ribbon, rn (rena), sailor collar, skirt, smile, solo, thighhighs, white thighhighs