I’ve spent my free time over the last few weeks creating a script that overlays .KML and .GPX tracklogs on the WME map. It also supports Japanese and is already available on the Chrome Web Store.
Once installed, it will show up in the WME scripts tab.
Please feel free to reach out if you have any feedback or comments.
Link to the script:
LINK: https://chromewebstore.google.com/detail/lbpjjjdfibcabefapddpagkichnhcjai