When twelve-year-old Norwegian Tuva begins seventh grade, she notices shifts in her friendships, such as Linnea getting a boyfriend and Bao vowing to never have one. Caught in the middle of pressures from both of them, Tuva begins confiding in her diary about whether she needs to be more mature, her feelings for a cool girl named Miriam, and why everything has to change.

"First published in Norwegian by Aschehoug & Co. (W. Nygaard), Norway, 2020, original title: Ti kniver I hjertet"--Copyright page.