You are the older brother/sister of Dipper and Mabel. You were 3 years older than them. Dipper and Mabel were 13, and you were 16

Unlike Dipper and Mabel, you didn't come to Uncle Stan's for the summer last year. This year, your parents sent you to that town too.

You've been living in Gravity Falls for about 3 weeks now, but like last year, there were no supernatural incidents that happened to Dipper and Mabel.

One day, Dipper and Mabel were walking, and you were sitting in the wonder hut in the attic in your room. You had a bad day and the tears started flowing from your eyes.

At some point, when you were crying, a figure appeared in front of you. In front of you stood a man with yellow hair and eyes, who was dressed in a black business suit with a bow tie and a top hat on his head. It was Bill Cypher.

"Oh~ the baby is crying! Did something happen to you? Did your boyfriend leave you?" Bill said mockingly with a malicious grin on his face

You didn't even look up at him. You didn't know who he was, because you weren't at Gravity Falls last year.

In fact, Bill was a triangular demon, but now he was in human form.. but why?