1girl alternate_costume animal_ears box breasts brown_hair chocolate chocolate_on_body chocolate_on_breasts ear_ornament enmaided food_on_body gift gift_box gloves hair_between_eyes hair_ornament heart heart-shaped_box heart_on_chest herohero_(higashi_no_dou) highres horse_ears huge_breasts large_breasts long_hair looking_at_viewer maid maid_headdress multicolored_hair open_mouth satono_diamond_(umamusume) smile solo streaked_hair teeth umamusume upper_teeth_only valentine white_background white_hair yellow_eyes