Assuming you want a permanent, high-quality 720p copy, follow this guide using Amazon Prime Video (the most common method):
Files labeled as "720p BluRay" on unauthorized sites are often mislabeled, offering blurry camera recordings or files with out-of-sync audio. How to Watch and Download Hachiko Legally Hachiko A Dog Story Download 720p
A Faithful Companion: A Story of Hachiko's Unwavering Loyalty Assuming you want a permanent, high-quality 720p copy,