When To Build Your Own Chart
A custom chart helps when you are tracking a drama with too many factions, aliases, marriages, and betrayals to hold cleanly in your head. It is especially useful for viewers who want a spoiler-controlled map rather than a fully pre-labeled one.
For Pursuit of Jade itself, the canonical relationship map is usually the faster starting point. This editor is better when you want to annotate your own version, combine multiple dramas, or track a watch with friends.