1girl bangs blue_theme closed_mouth floating_hair flower hair_flower hair_intakes hair_ornament isshi_pyuma long_hair long_skirt monochrome neckerchief pleated_skirt sailor_collar sailor_shirt sakugawa_school_uniform saten_ruiko school_uniform serafuku shirt short_sleeves sitting skirt smile solo toaru_kagaku_no_railgun toaru_majutsu_no_index very_long_hair