The Umiana Trench had been quite fun and helpful to the development of his Martial Art, but ultimately it was not a place that held Rui's interest, and most certainly not a place that held Kane's interest. The two of them were more than willing to leave the Umiana Trench as they continued their little explorative voyage to the west.
Rui considered it a good sign that Chairman Deacon hadn't come looking for them yet. They hadn't met any Martial Squires that had come to the Umiana Trench looking for a black-haired or green-haired Martial Squire.
This was a good sign, it meant that the decoys that Rui had commissioned from Guildmaster Bradt were doing a good job keeping Chairman Deacon's sights fixed on the Kandrian Empire. The Martial Union was also aiding in order to make it look like ir really was them.