Shoujo Ai is a genre of yuri literature that focuses on girls pursuing romantic relationships. There are many sub-genres within the genre and one of them is Shoujo Ranobe which tells stories about girls who compete for the affection of a boy. The Shoujo Ranobe genre has been around since the 1990s and has influenced other genres like moe, harem, yaoi, shounen-ai, and otome. The novels have been adapted into manga, anime, movies and video games. Shoujo Ranobe novels are generally structured in four parts: Introduction to protagonist's conflict with one or more other characters; Confrontation between protagonist and antagonist(s); Conclusion where protagonist wins or loses her love interest (boy friend).