@font-face {
   font-family: 'Noto Sans Japanese';
   font-style: normal;
   font-weight: 300;
   src: url(//fonts.gstatic.com/ea/notosansjapanese/v6/NotoSansJP-DemiLight.woff2) format('woff2'),
        url(//fonts.gstatic.com/ea/notosansjapanese/v6/NotoSansJP-DemiLight.woff) format('woff'),
        url(//fonts.gstatic.com/ea/notosansjapanese/v6/NotoSansJP-DemiLight.otf) format('opentype');
}
/*ご丁寧にGutenbergが割り込みしてNoto Serifをロードしてくるので対策。*/
 .wp-block-gutenjpfont-noto {
    font-family: Noto Sans Japanese !important;
}