Complex sentence: The "Bildungsroman" is a specific subgenre of coming-of-age story, prominent especially in literature, that focuses on the protagonist's psychological and moral growth, and in which character change is thus extremely important.
Split into simpler sentences: The "Bildungsroman" is a specific subgenre of coming-of-age story. It is especially prominent in literature and focuses on the protagonist's psychological and moral growth, and thus character change is extremely important.