Platforms like Naver Series On or KakaoPage often host these films for rental or purchase, though you may need a VPN or a local account.
If you are looking for the "best" version, here is why that specific filename is popular:
This refers to the audio codec. It provides high-quality stereo sound that is compatible with almost all devices (TVs, laptops, tablets). Where to Watch Legally
This means the file was captured from a streaming service. Unlike a "Web-DL" (which is the raw file from the server), a "WebRip" is recorded, but at 1080p, the quality loss is usually indistinguishable to the average viewer.
There are limited DVD releases of the film. While usually 480p, they offer the most "authentic" collection piece and often include the original Korean audio with hardcoded subtitles. Why Quality Matters for This Film
This is the compression standard. It ensures the file size stays manageable (usually between 1.5GB and 3GB) without sacrificing visual detail.