Because Grander Musashi is licensed by older distributors (not currently on Netflix or Crunchyroll in Indonesia), the repack community keeps it alive. Here are the safest indicators of a legitimate "Upd Repack":
Grander Musashi Batch Sub Indo 480p MKV
The "Upd Repack" breathing new life into this classic proves its staying power. Here is why an Indonesian anime fan should watch it today: anime grander musashi sub indo upd repack