I'm glad you seem to be enjoying Best Sister Ever. The story has previously appeared elsewhere, so I am confident many people will thoroughly enjoy it. It spans 30 chapters and although it is erotic in nature, there is much more to be had from it.
I plan to publish a free chapter every week, sometimes two a week. If you feel you can't wait, you can get the eBook right now (as PDF and ePub files) at my website:
http://tiny.cc/bestsister
Update: many people told me they don't have Paypal, so I've added credit card payments as an option.
However, you are quite welcome to enjoy this as a weekly serial!
Oh, here is the cover of the book, if you're curious:
http://imgur.com/tFEEQfa