Sengo Mura is an Oni working for Tzaryan Rrac. He practices forgotten metallurgic techniques from ancient Borunan, and is able to produce works that can rival House Cannith in quality, though not in quantity. This rare and particular ability makes him particularly valuable not just to Tzaryan, but also to Droaam as a whole. He sometimes has to work commissions for the Daughters of Sora Kell, adding his skills to those of the Venemous Demesne.
Sengo was the architect behind Tzaryan Keep, and is responsible for it's strange design.