Hiram

You can use this plugin to show up notice on article / page. Like “Cookie Notice” or “Adult Content Notice”.
Plugin Features
<ul>
<li>Free for everyone.</li>
<li>Show popup notice on post / author archive page.</li>
<li>Insert advertisement to notice box.</li>
<li>Custo notice box n title / content / button.</li>
<li>Custom decline button URL.</li>
</ul>

WP Content Restriction

This plugin can avoid teen (under 18) reading adult content.
Online use example: https://www.kocpc.com.tw/archives/69797



WP Content Restriction vs Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem