“If it wasn’t for the fused-with-Zyx thing, I suppose I would just be normal—whatever that means.”   When Felix Yz was three years old, a hyperintelligent fourth-dimensional being became fused inside him after one of his father’s science experiments went terribly wrong. The creature is friendly, but Felix—now thirteen—won’t be able to grow to adulthood while they’re still melded together. So a risky Procedure is planned to separate them . . . but it may end up killing them both instead.   This book is Felix’s secret blog, a chronicle of the days leading up to the Procedure. Some days it’s business as usual—time with his close-knit family, run-ins with a bully at school, anxiety about his crush. But life becomes more out of the ordinary with the arrival of an Estonian chess Grandmaster, the revelation of family secrets, and a train-hopping journey. When it all might be over in a few days, what matters most?   Told in an unforgettable voice full of heart and humor, Felix Yz is a groundbreaking story about how we are all separate, but all connected too. Gr 6–9—A one-of-a-kind story in a familiar diary format. When 12-year-old Felix was a child, his father died in the same lab mishap that fused a fourth-dimensional being known as Zyx to Felix's body. Now that Felix is on the precipice of adolescence, his body is having more trouble containing Zyx, and both must prepare for a risky separation procedure. This novel takes the format of Felix's blog, with asides from Zyx, who communicates by typing. The creature is endlessly supportive of Felix, providing an equal amount of positive reinforcement and earnest confusion at human social mores. As both move toward what may be their deaths, Felix uncovers long-hidden family secrets, discovers his own gift for writing, and develops a connection with his crush, Hector. While Felix's situation is certainly unusual, readers will respond to his self-doubt, the funny asides, and the suspense of how the procedure will turn out. Most notable among the supporting cast is his gender-fluid grandparent Grandy, who alternates among male, female, and no presentation depending on the day of the week. Grandy's presence allows for an explanation of choosing one's own pronouns (here: vo, ven, veir, veirs, veirself) and offers, along with the biracial Hector, more ways for Felix to better understand how all people contain multitudes. VERDICT Like the sweet older brother of middle grade series such as "Diary of a Wimpy Kid" and "Dork Diaries," this title, with its combination of light sci-fi and relatable stakes, should appeal to younger teens.—Ann Foster, Saskatoon Public Library, Sask. An NPR Best Book of 2017 A Kirkus Reviews  Best Book of 2017 A VOYA Top Shelf pick for 2017 An ALA 2018 Rainbow List Top Ten pick ★ "Acutely perceptive, disarmingly witty, devastatingly honest, and utterly captivating. Joyful, heartbreaking, completely bonkers, and exuberantly alive. " — Kirkus Reviews , starred review ★ " Captivating . . . Felix's story is a love letter to anyone who feels out of place and a testament to the beauty of being 'different.'" — Publishers Weekly , starred review ★ “Lisa Bunker's clever science fiction debut is heartwarming and witty. Felix's looming high-stakes procedure creates a sense of suspense, while the push and pull between Felix and his alien guest incubates humor, compassion and ingenuity . . . The marvelously diverse cast of Felix Yz is certain to charm audiences and leave them eagerly anticipating what Bunker will deliver next.” – Shelf Awareness , starred review ★ "[A]  charming, engaging, humorous, and heartrending tale of self-awareness and coming of age." — School Library Journal , starred review of the audiobook “If you think a boy with an alien inside of him doesn’t have a whole lot to teach you about life and love and the ways we are connected to each other, then you’ve never met Felix Yz. Felix would be wholly original even if he didn’t have an alien inside of him—which is part of the beauty and awe of this book. Between Felix and Zyx and family secrets and chess and that fated first crush feeling, Lisa Bunker shows us all the subtle ways we are connected and what it means to risk everything, just by being ourselves .” —Bonnie-Sue Hitchcock, author of the Morris Award finalist The Smell of Other People’s Houses " A one-of-a-kind story . . . Like the sweet older brother of middle grade series such as “Diary of a Wimpy Kid” and “Dork Diaries,” this title, with its combination of light sci-fi and relatable stakes, should appeal to younger teens." — School Library Journal "An original take on classic themes of family acceptance and middle-grade love. There are plenty of laughs to be had in this lovable debut . Bunker is an author to watch." — Booklist “In this highly original, beautifully crafted debut, the characters are each unique, yet present with a next-door neighbor quality with which readers will relate, despi