: Specifically catered to movie rips, this site usually has clean SRT files for common 720p BluRay versions.
: Search for "Grave of the Fireflies (Hotaru no haka)" and look for the BluRay or 720p tags. This site often has high-quality fan-made and official translations in dozens of languages. subtitle Grave.of.the.Fireflies.1988.720p.BluRa...
: Look for the entry matching the 1988 release. You can filter by the specific rip name to ensure the timing (sync) matches your video file exactly. : Specifically catered to movie rips, this site
If the text appears too early or late, most media players (like VLC or MPC-HC) allow you to adjust the delay. In VLC , use the H and G keys to shift the subtitle timing by 50ms increments. : Look for the entry matching the 1988 release
You can find and download subtitles for this specific release from several reputable subtitle repositories. Here are the direct paths: