Transmigrated To A BL Novel??

Back then I was so dreaming to be transmigrated to some novel or to the pass like what I used to read in a novel. And when I thought god must heard my wish I was so ecstatic but that feeling fly away quickly when I found I was transmigrated to a BL novel, and the worst thing to know is your just a side character?   ' Huh' god most be laughing right now just by watching me go insane!!!  but I was smirking, looking to the clouds, then give the god my middle finger " just watch me how I would ruin this story of yours" and I laughed like some creepy weirdo.