1girl absurdres belt black_socks blonde_hair blue_ribbon breasts closed_mouth dress elbow_rest finger_on_trigger gun handgun head_rest highres holding holding_gun holding_weapon lancheu long_sleeves looking_at_viewer lycoris_recoil lycoris_uniform m1911 neck_ribbon nishikigi_chisato one_side_up pleated_dress red_belt red_dress red_eyes ribbon short_hair sitting sitting_on_stairs smile socks solo stairs thighs weapon white_background wing_collar