Yaoi

Yaoi (やおい) is a term for fiction that shows homosexual male relationships but is usually created by men and women (can be called Fujoshi/Fudanshi too). Most yaoi fans are male and female.
Yaoi can also show a girls relationship. This is called "yuri". It is mostly created by men. Some yaoi are real but most of are the yaoi's imagination. One example of yaoi anime is "Sekaiichi hatsukoi", a good example of a great yaoi manga is "Obnoxious Hero-kun".