This sounds exactly like my kind of movie. Not to mention it's being made by Bong Joon Ho, made one of favourite movies (across all genres); Memory of a Murder.
While his later movies are excellent (Okja, Snowpiercer, Parasite), Memories of a Murder benefits from a more indie vibe, a less polished presentation and a more eclectic style. Check it out if you liked his later movies (I would recommend watching it in Korean with subtitles).
CG is their sister site. I don't believe they have another sister site.
Like with all private trackers, best route is via invite forums. If you can get into CG, you should be able to get into TVV.