Very nice story. Very simple, yet something you could easily see in a more down-to-earth doujin/ecchi manga. There are some spelling/grammar mistakes, but nothing too glaring.
The sisters were fun to read about, and I can only imagine some of the stuff they might get into. Think there'll be more down the road?
Author's Response: glad you liked it, Unfortunatly, this was a one-shot just like the other answered request, so there won't be a second, sorry