Pepi is a 26 years old girl, rather shy, works as a waitress in a bar, studies engineering in Turin, but lately the exams do not go as she would like. She has a very close company of friends including Stella, her roommate and fellow student and Holly, who has a soft spot for her. Pepi likes music, from classical to dance music of the 80s and 90s but she doesn’t go dancing often because she sees clumsy and clumsy in her movements. He has a fondness for fiction books, and art in general. The absurd meeting with Boom will change her life and Pepi will be involved in an adventure to the Boundary between two universes, where she will discover his exceptional empathic skills and her bond with Universe of Sound... She's the character that changes and matures most in the narrative arc of the entire series.