This isn't an angst-filled story or a substitute romance in the traditional sense, but it is melodramatic...
Xie Anli: "I know you see me as a substitute, but that's okay. I'm willing."
"I'll help you get revenge and conquer the world. I do it because I want to."
"I chose all of this, so when I die, you don't have to grieve."
"What? He cried for me? That's impossible. It's all fake. I know that."
"Of course he doesn't know why I approached him. Otherwise, how could he have kept me by his side for so many years?"
Theme: Finding oneself