seems to be a mix of Japanese and English. The Japanese part could be interpreted as "To the Yamato, forever," or something similar, though "Erai-raws" doesn't form coherent Japanese. It might be a title or a phrase related to a story or song.
: The project is structured as a seven-part theatrical series, which will total 26 episodes when completed. Watching the Episode You can find this episode on major anime platforms: -Erai-raws- Yamato yo Towa ni - Rebel 3199 - 01...
Erai-raws does hardcode subtitles. You may need to download external fonts or enable subs in your player (VLC, MPV, MPC-HC). seems to be a mix of Japanese and English
It looks like you’re referencing a file naming convention for a fan-subtitled or raw anime release, specifically: " or something similar