Aside from judging her singel skills too harshly, I reckon Kana was mostly correct, as far as the professional side goes. She might be suffering from the Mark Hamill disease: No matter what she's been doing since, she will forever remain a child actor, but since she's no longer a child, she's history. Hamill was known for a single role and never really could get over it in his career. It's a rather common nightmare for young actors, so I don't see why it couldn't work like this for Kana as well. That being said, I suppose she's being extra harsh because of what happened with Aqua. Aqua doesn't seem to understand it, which makes things even more awkward for Kana.

It turns out the producer didn't know all that much. He might be onto something with the theater group, but it's obviously not what he thinks. Ai never fell in love with anyone, so perhaps the theater merely made Ai realise that she could pretend to be everything she isn't, make her life a theater play. Thus her copulation partner doesn't need to have anything to do with Lala Lai. It could, though, if it had happened to be convenient for her.