Board Thread:False Info and Speculative Discussion/@comment-190.27.43.13-20140708231921/@comment-25165555-20140711081217

The Yukimura family is 2/3 supernatural. They won't leave because they can't. Beacon Hills is the beacon for the supernatural and now that the nemeton's charged beause of Allison, Scott and Stiles sacrifices, I think leaving permanently would be like a nail trying to free itself from a magnet. However likely, it's just my theory though.