You really wont be able to understand a lot of this if you dont either read passion or read a full summary of it. This work is an add on to that one, so it cant really be consumed stand alone. If i were to explain everything wed be here a while
Theres some stuff you can skip, but passion sets up the world and xinlu is very important and a lot of stuff happens with him for the whole time taeui is at unhrdo. You can skip a lot of the stuff in between when he leaves unhrdo and when he arrives on the island. But you definitely need to read the stuff during unhrdo and the island to understand raga to its full extent.
Ohh thank you guess i will go back there then resume this story
Can someone give me some background info from the original work passion because I'm so lost here and i don't want to read it.. reached ch 6 and don't understand anything