What is Sextember, you ask? Well it's similar to pr0ntober except it starts tomorrow -- not in a month and a day!
Basically it's sex, every day of September. Writing it, in this context.
A little more info over on my writing comm.
So whatever your style (make it sex or just make it sexy, make it foreplay or make it full out *beep*) I'd love it if a bunch of people in the Bleach fandom took this challenge on.