Probably off topic, but about Vincenzo. I lived in Italy so I am thrilled to watch a K-drama with the occasional Italian reference that I actually understand without subtitles.
At the end of Episode 4, the end of the aria "Nessun Dorma" from Puccini's " Turandot" was brilliant, with Vincenzo whispering the words:
Begone o' night! Set, Stars!
Set, stars! At dawn, I will win!
I will win! I will win!
Dilegua, o notte! Tramontate, stelle!
Tramontate, stelle! All'alba vincerò!
Vincerò! Vincerò!
If anyone is interested, please listen to Luciano Pavarotti's version. Phenomenal.