But the type of rage that gets a girl to sell an organ to prove a point isn't something you can trigger. Only someone who is genuinely, well and truly, disconnected from reality would ever come up with it.
If we ignore the age gap and focus on them as individuals, they're perfect for each other. Ren truly understand Kyoko and he plays along with her fantasies. And while it may not be healthy for her to be stuck in her delusions, let the poor girl at least have this. She's a victim of abuse who's been taken advantage of / bullied her entire life.
What's worse is that Masumi Hayami is known for being ruthless and cold-hearted. He is known for treating actors and actresses like commodities, something even he admits. Tsukikage would have known this. And yet, she still signed Maya over to his company. That is very clearly exploitation of the worst kind.