At first, Ren Yuan couldn't help but glance once in a while at the currently changing young man, but when Whitey remain oblivious and ignorant as he shows his naked body while he changes despite knowing that there is another man in the same place as him has caused a worried frown to appear on Ren Yuan flushing face.
Because right now, Ren Yuan was able to tell that somehow Whitey seemed to be unaware and unconscious about how charming his current body really is, yes, it might look a bit thin and small but it was particularly slender and delicate which was among the best type of body among men who prefer to dominate another man.
Added to that flawlessly beautiful face then that is just asking for trouble.