k.nishiyama, , year_2024, 1girl, 2024, back, black_sailor_collar, black_skirt, black_thighhighs, brown_eyes, brown_hair, dated, flower, grass, leaf, light_blush, long_hair, looking_at_viewer, looking_back, neckerchief, outdoors, pleated_skirt, red_flower, red_neckerchief, sailor_collar, school_uniform, serafuku, signature, skirt, smile, solo, thighhighs, tree, white_flower, white_serafuku, commentary_request, highres, painting_(medium), traditional_media, watercolor_(medium), original