The Pines Paranormal studies and investigation team, consisting of our favorite two sets of twins, are in Kuoh, Japan to investigate the weirdness of the town, and discover the source of the anomalies there. But Dipper ends up in a little deeper than initially planned.

Dipper and Mabel aren't normal, being the twin children of Serafall Leviathan doesn't help. They get shipped off to Gravity Falls for one last American summer vacation before going to Kuoh. Of course when a mysterious journal written by an unknown author finds its way into Dipper's hands, things are never quite the same. Then again, normalcy is overrated. Rated M due to DxD.

Gravity falls has finally got rid of the demon known as bill cipher but as a last resort bill has opened a rift to alternate universes and has found himself in the world of highschool dxd with this being his last chance he seeks the power of one of the strongest being imaginable hoping to get his power back (issei hyoudou x harem) possible female Bill not sure yet