The Ashen Tower Sequence

While cataloging a 1920s German occult tome, modern librarian Shen Yizhou misread a line of prayer and transmigrated to Berlin during the hyperinflation of the Weimar Republic. Calling himself the "Night Watcher," he founded the Round Table Society and climbed from Sequence 9, the "Diviner." Between Lovecraftian madness and the ruins of war, he eventually became the second "Lord of the Gray Tower," commanding the Gray Tower and manipulating the course of history and fate.