Justin Bieber's Doujinshi novel can be used as an example: There were some fanfiction stories about Justin Bieber that told his story of growing up in the entertainment industry. These novels usually depicted Bieber's interactions with other stars and the challenges and successes he faced in his career. Some of the novels also involved Bieber's relationship with specific characters, such as his girlfriend Taylor Swift. Doujinshi is a form of fictional literature that is usually based on the plot and characters of the original works (usually comics, movies, television series, etc.). These novels were usually written by fans, who might add their own imagination and creativity to better express their love for their idols. It is important to note that doujin novels may have copyright issues, so you should get permission from the author or copyright owner when you create them.