Typical themes in a BL novel like 'the boy next world' might be love and self - discovery. The characters often go through a journey of understanding their feelings for someone of the same sex, which is a central aspect of BL novels.
In 'the boy next world bl novel', one of the main themes could be the exploration of relationships. This includes not only the romantic relationship between the male characters but also their relationships with friends and family. Another theme might be the struggle against society's norms. In many BL stories, the characters have to face some form of social pressure due to their same - sex relationship, and they need to find ways to overcome it. Moreover, personal growth is also likely to be a theme. As the story progresses, the characters learn more about themselves and become more confident in who they are.