1girl, against_railing, ass, ass_focus, balcony, blush, day, from_behind, gold_trim, green_eyes, habit, index_(toaru_majutsu_no_index), irokohaku, leaning_forward, long_hair, long_sleeves, looking_at_viewer, looking_back, nun, outdoors, railing, robe, solo, standing, taut_clothes, tight_clothes, toaru_majutsu_no_index, white_hair, white_robe