Easy!
One is Miyagawa Mitsuko, the Rukawa fan who dislikes Kogure. (?)
One is Tenjin Shuri, the Kogure fan who dislikes Rukawa. (?)
Yet... they make fanfiction to make you laugh your brains out...

Subject # 1: Slam Dunk...
Subject # 2: Dragonball...
Subject # 3: ...just wait... bwahahaha...