1girl, animal_ear_fluff, animal_ears, armband, bad_pixiv_id, black_gloves, blue_archive, blue_eyes, blue_leotard, blunt_bangs, blush, covered_navel, fingerless_gloves, gloves, halo, leotard, long_sleeves, neckerchief, niko_(blue_archive), ocha_(popopogg), pink_hair, red_neckerchief, sailor_collar, simple_background, sketch, solo, sweat, white_background