Lenore in 'The Raven' is the woman that the narrator deeply loved. She is dead, and her absence is what makes the narrator so melancholic. The whole poem is sort of centered around the narrator's mourning for Lenore, and the raven's presence seems to intensify his feelings about her loss.
We don't really know who Raven is just from 'Raven tells a story'. Raven could be an animal in a fable that has been given the power of speech to tell a moral - laden story. Or Raven could be a nickname for someone in a community who is renowned for their engaging storytelling skills.
Well, it's hard to say for sure. The concept of 'porn-like' is quite subjective. Some might consider certain novels with excessive sexual descriptions as such, but it depends on individual perspectives and cultural standards.
In many places, 18+ porn comics are considered illegal. This is because they can have a negative impact on society and violate moral and legal standards.
The main theme of 'The Raven' is often considered to be grief and the inability to move on from loss. The narrator is mourning the loss of his beloved Lenore, and the raven's presence and its repeated word 'Nevermore' only deepen his sense of despair and hopelessness.