From the author of Stand Up, Yumi Chung! comes a funny and utterly charming novel about friends--how to make them, how to let go of them, and how to be your own BFF. This is the story of Sunny Park, a seventh-grade student at Ranchito Mesa Middle who loves the K-pop band Supreme Beat, hanging out with her cool grandma, dancing when no one is watching, snacking on shrimp chips, and being there for Bailey, her best friend since...