A fantasy novel usually referred to a novel of the TL (Boys' Love) type, with the love between men as the main plot. However, this did not mean that all fantasy novels were BL. There were also other types of fantasy novels such as Girls' Love (TL) and Man-to-Man (MTF). Danci novels are a cultural phenomenon that covers many different types of stories and topics, and the reader groups are also very different.
No. Erotic content is not suitable for all audiences, especially minors. It contains inappropriate sexual elements that can have a negative impact on people's mental and moral development.
I'm not entirely sure what 'bl1 a christmas story' specifically refers to. It could be a unique story, perhaps a local or personal creation. Maybe it's a story with a special character or event related to Christmas.
Another theme could be self - discovery. The characters often grow and learn more about themselves through their relationships. For example, they might discover new aspects of their personalities or their desires in life.