I don't watch all the The Eternal Love 1 & 2, only take a look briefly, in terms of production quality this is…
You should really watch the first 2 seasons first. I mean you can kind of watch this without the others but you'll definitely appreciate it more if you watch the other ones first. That's just my opinion.
I think 2 so far. I'm pretty sure the end song is new and there's a song that played during the 5th episode that I really liked and I think is also new