Kazue Kato owns both copies of Yoakemono as well. I think he might have been an assistant of hers at one point, or maybe a close friend because she bought and showed Yoakemono off on her twitter when it was still running.
I didn't like UBS due to it's lack of story. The art could've used some improvement as well.
Yoakemono had excellent art, but lacked in pacing. I can't really comment on it's story due to lack of knowledge since I didn't follow it past chapter 3. Chapter 3 killed the series for me. It was such a waste of a chapter. First chapter, battle to the death. Second chapter, if memory serves correct, another fight takes place. Third chapter, the main character is cutting down trees. Ok. That chapter was very ill placed. Events are supposed to build up. Each event getting more exciting. Events aren't supposed to regress in excitement. I wish him luck on Zippo though. If the serials good, I'll definitely pick up the volumes. Jump needs some more "quality" series.