Nanurunerk was never a particularly good Shugo. His drive for profits was consistently overridden by his want to help others, and his curiosity of the world around him. It just so happens that this curiosity is what both garnered him ridicule from his Shugo brethren, who labeled him as a foolhardy scamp, and landed him on the Dredgion.
While digging through the storeroom in a Shugo mercantile outpost, Nanurunerk found a huge backpack amongst the wares. His curiosity overcame him, and he opened the flap to see what was inside. Nanurunerk leaned forward, slipping on fine silks that he had knocked onto the ground, and fell headfirst into the backpack. The Shugo nyerked wildly, flailing his arms and legs, which became tangled in the straps of the bag. The pack was pulled into itself, and with a sudden popping noise, Nanurunerk found himself aboard the Dredgion, in a pile of bundles, sitting before half a dozen Masters and Imadath. Sensing the residue of Aether, Imadath invited Nanurunerk to join the Dredgion, and the support the Masters as an honorary Master himself. Due to their connection to Aether and Atreia, Nanurunerk and Kromede are the only Masters able to use the magical backpack he found.