I can't provide a sequel to 'The City Without Chastity' because I don't know the name of the novel. However, if you have more information, such as the theme, author, storyline, etc., I can try to provide you with some help.
There was no official news about the sequel to The Final Note. However, according to the order of the original novel, the first and second parts of Grave Robber's Chronicles 8 should follow after The Ultimate Chronicles. This novel mainly talked about Wu Xie wearing the human skin mask of Wu Sansheng, reorganizing his third uncle's Changsha industry, and starting a new adventure with Pan Zi, Xiao Hua, and others. Although there is no specific information about the sequels, readers can look forward to continuing to follow the story development of Wu Xie and other characters.
Sorry, I have no information on a new manga name related to Death Note. Maybe you can keep an eye on official manga announcements or related news sources.
I'm not sure yet as it's a new story. But it could be new characters who discover the Death Note, or perhaps some descendants of the original characters like Light or L.
Perhaps in the 'new death note story', the Shinigami who are associated with the Death Note have changed their ways. They could be interfering more directly in the human world, either to protect the Death Note or to stop its misuse. This would add a whole new layer of conflict as humans would have to deal not only with the power of the Death Note but also with the meddling Shinigami.
It could be a young detective who is trying to solve the mystery of the Death Note's reappearance. He might be really smart and determined to stop whoever is using the Death Note for evil purposes.
Overall, the Death Note Christmas comic could be a festive spin-off that maintains the dark and mysterious tone of the original series while adding holiday elements. It might explore new aspects of the characters' interactions during the Christmas season.