That might be a good idea. A series in vogue that also has JP sub (at least in my region) would be SPY x FAMILY. Combined with Language Reactor, that would be easy to do, as well as easy to compare to native audio.
I am tempted to try Death Note, but in my region, there isn’t JP sub in Netflix (although I can get the text some other ways).
Another way is to download the subtitle transcript, then add narration lines (in Japanese, self-composed) – to make a fully standalone audiobook transcript.
Jul 20, Wed of Week 4 of Summer 
2022
Today, as well as yesterday evening, I listened to https://www.youtube.com/watch?v=363UfVStHTs&list=PLd0QB86GkG8MqIGVKfRCGtXph9hdjybwH in which the subscription came from earlier listening from Hukumusume. The voice is clearly spoken, with a nice BGM; however, I didn’t catch much, as well as there is no real Japanese transcripts for this one. (YouTube do have auto-generated option, however.) The actual transcripts are supposed to be found here – https://hhs.parasite.jp/hhslibrary/.
In the evening, I took a booked italki lesson, but the teacher said he can’t speak English, and I can’t speak Japanese well. (He can speak Mandarin and Japanese.) He recommended to find a English-speaking teacher. Then, I booked an instant trial 30-min class with a new teacher. She was ok, but I am not quite satisfied. (I entered italki classroom too early and got kicked out; then I talked via Skype.)
Then, my trial sessions ran out. Nonetheless, I booked a professional teacher to teach me N4-N5 grammar tomorrow. (Yeah, I specifically chose grammar lessons; as well as I gave my self-introduction in English, and chatted in Japanese afterwards.)
So, in total, I talked in Japanese (with speaking and listening) for about 1 hour, but far from smooth.