
Is it a green flag or a red flag that he loves the crown prince so much that he wants him to die so he can take him to the afterlife?

Mm i wouldn't say is green or red, but is important to read between lines he is a ghost so he dosen't see the problem in taking him to the after world to live with him, i think he got that idea after seeing the ghost girl with her lover, he dosen't understand the humans lives, he dosen't understand their feelings.
In many ways he's still a young boy experiencing his fist love because he hasn’t realize that he's in love with the prince and is selfish but that dosen't mean he actually wants to harm the prince, we can see he's helping him.
Both Night Song and Dreadful Night ended their season last Sunday. There's point in there being a Sunday any more