Hi! Sorry, I didn't see your comment there. Thanks for reporting the problem with 「し」. I'm sorry it's causing you trouble. I've filed an issue (https://github.com/birchill/10ten-ja-reader/issues/1657) to look into fixing this. Thanks and sorry again for the trouble.

I hope to add Vietnamese definitions at some point. If you know of any sources that match Chinese or Korean definitions to the JMdict dictionary entries I would love to add them. Thank you!