Adrain Pines is the oldest adopted son of the Pines family, who unfortunately had to leave for the summer along with his two young siblings, to stay with their Great Uncle Stan for the summer, who lives in a mysterious, sleepy town in Oregon named Gravity Falls. Or as Adrain calls it, "W.H.A.T"

(Note, there's a few changes in the Persona Timeline for the sake of this story) The prettiest smile hides the deepest secrets. The prettiest eyes cry the most tears. The kindest hearts have felt the most pain. But despite all of it, they have the purest souls.