Rule 34 Dev - 1boy 1girl azusagawa_sakuta biting_hair closed_mouth coffee coffee_mug cup expressionless futaba_rio glasses grey_eyes grey_hair half-closed_eyes highres holding holding_cup lab_coat mug necktie open_clothes red_necktie school_uniform seishun_buta_yarou shirousa shirt steam unbuttoned vest white_background white_shirt|21240122553