1girl absurdres bangs black_hair black_legwear blue_reflection chair checkered_clothes checkered_skirt classroom desk full_body hand_on_own_chest highres hoshinomiya_girls'_high_school_uniform indoors kishida_mel kneehighs looking_at_viewer official_art pleated_skirt ribbon school_desk school_uniform serafuku shirai_hinako shoes short_hair short_sleeves skirt socks solo standing window