Font asset loading/unloading question

The easiest way is to move those fonts to the Resources folder.
That way, the plugin will not keep a reference to them, instead it will just store the font name and whenever the language is loaded, it will load that font if any label is using it.

When fonts are not included in the Resources folder, then the only way of loading them, is by keeping a reference to the font which has an overhead.

The other approach is to use AssetBundles, and then create an AssetBundleManager to load the font from there, the same way as it does for the Resources folder.

More info about the asset loading can be found here:
inter-illusion.com/assets/I2LocalizationManual/AssetsTab.html


Also, note that if you had everything outside of Resources folder and then you move the fonts to there, the plugin will still have the reference in the Assets tab or the "references" section. After you move the font to the Resources folder, you need to manually go to the Assets tab and remove the references.

Hope that helps,
Frank