Some pre-packaged downloads or high-seas torrents come with subtitles already encoded into the video. The quality here varies wildly. Often, these are bot-translations that miss cultural references. For the best experience, always look for external that you can load yourself.
Before we dive into where to find subtitles, it is important to understand why Moonu is a unique case. Most romantic dramas follow a predictable arc: boy meets girl, they fall in love, a misunderstanding occurs, and they reunite. Moonu (which translates to "Three"—referring to the three stages of love) does the opposite. Moonu English Subtitles