The 'Harry and Daphne Obliviate' fanfiction concept is really cool. When Obliviate is involved, it can explore themes of power and responsibility. Harry, having experienced the misuse of powerful magic, should be more cautious. But if he uses Obliviate on Daphne, it might be out of good intentions like protecting her from a dark secret. However, Daphne might feel violated when she realizes her memories have been tampered with, which can lead to conflict between them and drive the plot forward in many different ways.
Sure, there are. A lot of fanfics play around with the idea of what would have occurred if Lockhart had actually succeeded in Obliviating Harry. Some fanfics take it in a more comical direction, like Harry forgetting all his magical abilities but still somehow getting into all sorts of crazy adventures at Hogwarts. Others might be more serious, exploring how the wizarding world would have reacted to a memory - wiped Harry.
One common plotline is that Daphne witnesses something she shouldn't, and Harry has to use Obliviate to protect her. Another is that an enemy uses Obliviate on Daphne to make her forget her connection to Harry, causing a rift between them. And sometimes, Harry accidentally obliviates Daphne's memories related to their relationship, and he has to find a way to make her fall in love with him all over again.
I'm not sure specifically which 'obliviate lemon fanfic' stories are considered good as it depends on personal taste. However, you could start by looking on fanfiction platforms like Archive of Our Own. There might be some interesting takes on the obliviate spell within fan - created stories.
One common theme is the exploration of memory and identity. Since the Obliviate spell is about erasing memories, fanfics often look at how Harry's identity would be affected if his memories were tampered with. Another theme could be the power dynamics between Lockhart and Harry. Lockhart is a supposed authority figure, and his attempt to use the Obliviate spell on Harry shows an abuse of power in a way. And of course, there's the theme of redemption, like whether Lockhart could ever make up for what he tried to do.
He might choose to obliviate himself because of guilt. For example, if he made a big mistake during a fight that led to the injury or death of an innocent, he couldn't live with the memory. So, obliviating himself would be a way to escape that emotional pain.
First, get a clear understanding of the 'obliviate' concept from the original source. Then, think about how you want to incorporate it into a story. For the 'lemon' aspect, if it's not adult - related, you can use it to symbolize something refreshing or a new start perhaps. Plan your characters and plot around how the obliviate spell affects them.
Fan Sizhe opened the Danbo Bookstore in his novel, Celebrating Years, and successfully managed the bookstore. He used best-selling books such as The Story of the Stone and The Collection of Banxianzhai Poetry to make a huge fortune and controlled the market through monopolization and exclusive copyrights. Fan Sizhe's business acumen and talent made him a successful businessman, accumulating a large amount of wealth.