Are Japanese-language anime scripts available on line?
I found the following searching for &quot;learn japanese from anime&quot;.
https://nihongoshark.com/anime/
This describes, well, a similar learning method, where one can do things with a subtitle file (if available).
From there I found a link to
https://kitsunekko.net/
which has a reasonable selection of material.
Lastly, there is always text ripping using
https://ytmp3.cc/en13/
then
https://convertspeech.com/processing.php
(Disclosure: nothing to do with either of these, just tried them once)
You only get three free conversions (which I suppose can be subverted with multiple computers or multiple IP adresses).  It gets some things wrong and the reading level is not that good, but it's infinitely better than nothing.