You must buy the physical Korean Blu-ray (Region A) from YesAsia or eBay (~$120 USD) and rip it using MakeMKV. This is the only legal way to own the definitive version.
For , the best “download” experience is using Viki’s offline feature (free trial available). You’ll get HD quality, perfect subtitles, and zero viruses. Download - Moon.Lovers.Scarlet.Heart.Ryeo.S01....
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