The course name is not essential anyhow, it could be replaced by "this course".
Still, I'm wondering why the language filter doesn't work here.
Our site being bilingual, it's better if the text displays only in the selected language (French or Japanese). When that's not possible or practical I display both languages.
It is turning into a bit of an adventure , but it would be possible to just poke the date and duration values into the text on the page. Then you could have the surrounding text generated as usual , and processed by multi lang as usual. So its possible, and just requires a little more thought. Let me know if you want to do that.