The journey of a heroine starting from the Dragon Clan

I have traveled through time, but it seems a little different from what I thought.
Looking at the petite girl in the mirror, Mu Qingzi was silent for a while.
"……system."
【exist. 】
"Aren't you going to come out and explain?"
[If you can’t become the protagonist, then you will become the heroine. Come on, host. 】
"..."
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Question, how to become the heroine in Dragon Clan?
The story opens in Black Swan Harbor, rewriting the tragedy from scratch and changing it to single.