Hey! I'm hoping you'll be able to implement more Asian language compatibility eventually. I'm learning Chinese, so it would be super useful to use Lookupper for that in my games.
Suggestions related to that:
I don't know if you are okay with looking at other apps for inspiration, but for Chinese I use Inkah (on browser) which is able to detect individual characters, different meanings/pronunciations, and whole words. It also has basic audio, but it can not translate or select whole sentences.
If you would like a good resource for Chinese in general, or to test Lookupper, the Chinese Grammar Wiki by AllSetLearning is very helpful. They also include some idioms, etc.
For Japanese I believe there is a Youtube extension called Migaku which helps to translate captions in videos for learning and to add them to a deck. I haven't used it though.
Good luck and looking forward to future updates!
