Rhode didn't object to Erin's decision. As a matter of fact, this was the only way out. Even though his initial plan was to rescue Erin and bring her back, in this situation, his explanations just wouldn't cut it. Besides, even if he were to leave, perhaps he wouldn't even be able to exit the underground maze. He might as well take a risk to see whether they could find another exit after Erin inherited the dragon soul powers. As for Ion, Rhode couldn't be bothered. Rhode wasn't mindful about a guy who would be dead sooner or later. Moreover, Rhode wasn't interested in lowering his status in becoming Ion's younger sister's husband. In that case, the most sensible choice was for Rhode to kill the 'wife's' older brother, and everything would turn out well.