Alternatively, maybe they're referring to a specific anime or movie. "Moodx" could be a misspelling of "Movie X". "Kand" might be part of the title. But again, I'm not familiar with a work by that name.
Alternatively, maybe "4k2918" is a code referencing a specific work, like an anime episode, a movie, or a video game. Let's see. If "ep 2" refers to episode 2 of something called "Kand", which might be a series. Then "Moodx" could be the name of the movie or series. But without more context, it's hard to tell.
In the end, the "best" is not a metric to be mastered but a dialogue to be fostered.