2girls arms_around_neck bangs beige_background black_neckerchief blouse brown_eyes brown_hair closed_mouth commentary dress_shirt girls_und_panzer grey_shirt hug incest kuromorimine_school_uniform long_sleeves looking_at_another multiple_girls mutsu_(layergreen) neckerchief nishizumi_maho nishizumi_miho ooarai_school_uniform parted_lips school_uniform serafuku shirt short_hair siblings simple_background sisters sitting smile standing white_shirt yuri