Valya’s neural implant is amazing. Its game-like app, CASUAL, has managed her depression and anxiety, stabilized her mood, and helped the infertile Valya get pregnant. But new laws forbid her from using the device when she's sole caregiver for her infant. Her gaslighting ex won't help her, and she can't afford a nanny, so her obstetrician insists that Valya wean off CASUAL before giving birth. Despite a will to quit and a supportive new love interest in her birthing class, disabling CASUAL turns Valya's anxiety into full-blown panic attacks. Her psychiatrist offers to enroll her in a controversial clinical trial that would place a tandem implant in the baby and allow Valya to keep hers active. Valya must decide whether she should attempt parenting without CASUAL or install a minimally tested device in her vulnerable child. Casual is a stark and cutting glance at a near future that looks uncannily like our present, exploring themes of bodily autonomy and the struggle for mental health in a world increasingly divided.