Ben 10: alien observation

At the request of a site member I've started a Ben 10 story based on a picture. The picture is of Ben and Gwen engaged in sexual intercourse with Gwen penetrating Ben with a strap on.

I'll be posting part one of the story immeditly following this post and will add more parts in time.

Themes: Sex, incest, Ben 10, aliens, confinement, BDSM (Maybe)

Pairings: Futa (Gwen) X Male (Ben)

http://www.futanaripalace.com/showthread.php?34959-looking-for-someone-to-write-a-story (Original request thread... also contains original picture)