Sister, Brother, Secret Lovers

Great start.

Great read, it only needs several more longer chapters.

Good idea

But it needs more development.

Forget about ch length

Don'ty listen to the anoms about ch length. Be your own man I liked your story. It was to the point and I enjoyed the way the sex scene was presented. If the anoms really expected you to follow their advise they'd have put their names. Write your ch your way not theirs.

Good story line

Felt a little left out of the story when they went straight to sex. This is more of a fantasy told in writing. Bleh
RS

Lush hot cunt,fab

Oh the lucky fuckers, sucking and fucking each other into next week, more and more like this please and csoon

Whats your sister breast size ?

not grinded.

"as we grinded our hips together"??
"ground" would be the right word to use in this phrase.
Other than that, a good story.