Common themes could include the exploration of taboo and boundary-pushing sexual experiences, as well as the emotional and psychological aspects of such complex relationships. However, it's important to note that such themes can be quite controversial and not suitable for all audiences.
Raven Roth may also be a character who has a mysterious past related to the dark arts. Maybe she was once involved with a group or a situation that had ties to Voldemort, but she has now turned against the dark side. Her knowledge of the dark arts, though dangerous, could be used to help Harry Potter understand his enemies better and find ways to defeat them. This complex backstory would make her a very interesting character in the fanfiction.
Well, in these fanfics, Beastboy and Raven's relationship is quite interesting. They are from different backgrounds and have different powers. Their love might start from a simple friendship or a mutual understanding during battles. The fanfic writers explore how they overcome their differences, like Beastboy's jovial nature vs Raven's brooding side, to develop a deeper connection.
Since I haven't read the fanfic, it's hard to say exactly who Raven Roth is. But based on the title, Raven Roth is the one who breaks Naruto's heart, so could be a character created for this particular fanfic.
Well, the raven story that I know is Poe's famous one. There's this guy who's all alone in his chamber, feeling super sad about his lost love. Then a raven shows up. And every time he asks it a question, like if he'll see his love again, the raven just says 'Nevermore'. It's really spooky. The raven seems like a symbol of his doom and his never - ending sorrow. It makes you feel the cold and the loneliness of that poor man.