Install Yomitan Browser Extension
Ensure the display engine is Webview2
Using the browser extension requires Webview2. Unless the system does not support Webview2, the default display engine is Webview2.
Enable Use Browser Extension and add the Yomitan extension.
Wait for the initialization to complete, then configure Yomitan.
Final Result
In addition to the main interface, the history text window can also use the browser extension, but it is not enabled by default to save resources.