Sheyan undoubtedly received a lot of trading offers. Some of them came from the Blue-ray Party, some from the Maritime Alliance, and, to Sheyan's surprise, there was even an offer from a lone wolf who had been keeping a low profile all this time! He came straight to Sheyan and asked to trade for the divine artifact, the Black Arrow!
The lone wolf may have gone under the radar, but it would not be correct to say that he had kept himself completely hidden. Remember the first death which befell a member of the Fellowship of the Ring during the siege? In the dark of the night, a huge stone had "accidentally" struck Pippin, flattening him from a 3D object to a 2D object.
At the time, everyone thought it was just a lucky hit, but now, it seemed like they had all been wrong. The lone wolf's teammates were all hired mercenaries. The lone wolf himself was a big shot from Noah Realm M. They were actually outside reinforcements hired by Noah Realm C.
