Thanks. But currently I'm too busy and have no more free time to do additional tasks (You can see the GitHub link, there are still some TODOs need to be finished, include icon and bugs. If you can, feel free to push a PR). In fact, I just ported FuriganaInjectorPlusPlus into WebExtension, make it at least "basically usable" on Android as soon as possible because I really need that urgently, then I have to go back to my other works.