Petunia married a biochemist, and Harry grew up reading science and science fiction. Then came the Hogwarts letter, and a world of intriguing new possibilities to exploit. And new friends, like Hermione Granger, and Professor McGonagall, and Professor Quirrell... COMPLETE.

After the Promised Day, Ed is turned into what he never dreamed of becoming. And when he goes to Hogwarts, it is not to search for the Philosopher's Stone, not to regain his humanity, and not to return to his home. EdWin in the end

The Gate was opening; the black arms stretched toward him and Pride. Ed knew he had no say in the matter. He would be pulled to this parallel dimension, alternate universe—whatever it was—and Amestris would be left to die. Truth merely grinned.