Tri'ade Twilight Lord of Nazarick

[AU] This is the story of the Arch-Devil Tri'ade Lord of Nazarick. Set in an alternative history of the story of Overlord. A history where Momonga mysteriously left the guild before its collapse and Tri'ade took up the mantle of Guild Master. It is up to Tri'ade now to lead Nazarick in the New World after overseeing the decline of his Guild.