Before we start

The fanfic was originally an x reader but I have a way too hard time coming up with those. The story will also be about the love of two separated siblings and romantic rejection.
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After the normal mode ending and speaking with Tanner, Luna is returned home. But suddenly it turns out that the police woman trapped someone inside her house. That someone will change Tanner's life forever, and she will do anything to keep him sane.

Are you that girl?