Yaoi love letter manga is characterized by its exploration of deep and complex romantic feelings among male characters. The storylines might involve forbidden love, overcoming obstacles, and intense emotional conflicts. The art is typically designed to make the romantic moments visually appealing.
The safety of Yaoi manga varies. If it adheres to legal and ethical standards and doesn't promote negative values or behaviors, it can be considered relatively safe. However, some might have content that's not suitable for all ages or could have been produced illegally, which poses risks.
Sure, Yaoi manga is very real. It typically focuses on romantic and sexual relationships between male characters. These mangas are created and consumed by many people around the world.
The main difference might be in the collection format. Omnibus yaoi manga often compiles multiple volumes or stories in one book, while regular yaoi manga is usually published as individual volumes.