The official Japanese Blu-ray (ASIN: B0041R9R3M) contains a 1080p AVC (not x264—that’s the codec, but the disc uses a licensed encoder) with Japanese LPCM 2.0 audio. No English subtitles. No international Blu-ray exists.
The specific version referenced, often sought for its high visual fidelity, provides a "top" tier viewing experience with the following technical details available on retailers like YesAsia : sayonaraitsuka20101080pblurayx264abd top
The high-definition format serves the film's non-linear structure perfectly. As the characters age, the clarity of 1080p allows the audience to see the subtle work of the makeup department and the expressive aging of the lead actors, making the passage of time feel visceral and real. Why It Remains a "Top" Choice for Collectors The official Japanese Blu-ray (ASIN: B0041R9R3M) contains a
The part suggests you’re looking for a high-quality version of this film — maybe the best encode among available releases. The specific version referenced, often sought for its
Yes and no.
Bittorrent searches for “sayonaraitsuka20101080pblurayx264abd” will only lead to dead links, malware, or fake files. The actual file you want is likely named Sayonara.Itsuka.2010.JAPANESE.1080p.BluRay.x264-SaNti.mkv (6.5GB) or similar.