Fights Break Sphere: I Became Xiao Yan's Sister

"Welcome to the Douqi Continent!"
What? I traveled through time and space and became Xiao Yan's sister? System, are you sure you didn't make a mistake? You really wouldn't suspect anything with just one more person? This isn't right. It's unscientific!
Forget it, just make peace with it now!
But your setting, Xiao Yan is my biological brother, I can't always hook up with my biological brother, are there other men in Doupo? No CP for the time being!

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