1girl black_legwear black_serafuku candy crescent crescent_moon_pin crossed_legs food food_in_mouth from_side green_eyes green_hair hair_ornament hairpin headphones headphones_around_neck holding holding_food kantai_collection lollipop long_hair nagatsuki_(kantai_collection) necktie school_uniform serafuku simple_background sitting solo thighhighs vent_arbre white_background white_neckwear