I have this feeling that Kaouru is already somewhat aware of Uta's feelings. The first time was when she was talking to her manager about going to her hobby full time for a little time. However, this may be just her wondering about her carrier choice or whatever. More intriguing would be the beginning of the same chapter (n° 6), something is not right with her happiness... Perhaps this Uta's chance to make it all true?
And now, with the special of vol 1, I have the feeling that Kaouru is beginning to wonder if there's something going on with Uta. Since we see their hug, I wonder if she thinks it's related to their relationship directly or only about Uta's love life in general. More chances for Uta to make her wish happen.
I can't wait how everything is going to play out. I root for Uta since I'm here for the yuri, but I still feel sympathy for Reiichi... There's going to be sadness.