Where can I watch bonobono with japanese subtitles?

Hello! I’m having a hard time trying to find where to watch bonobono with japanese subtitles. I’m looking to watch my first anime and by what I read it seems to be a good fit. It seems to not be available on crunchyroll, apple tv or any other stream. On youtube, I can only find it either with no subtitles or with english subtitles, which is worst than no subtitles to me since the grammar rules are so different.

Thanks!