In patients receiving oxaliplatin-based chemotherapy, resulting in frequent peripheral neuropathy and requiring long-term management, anticancer drug-induced platinum-based peripheral neuropathy (mixed motor, sensory, and autonomic neuropathy) can result in the coasting phenomenon in which the symptoms worsen temporarily after two to three weeks, even after the cessation of the drug. The coasting phenomenon is difficult to manage due to the unpredictable nature of the symptoms. We encountered a patient with grade 3 peripheral neuropathy that developed rapidly in the second cycle after the treatment to switch from mFOLFOX6/bevacizumab to FOLFIRI/aflibercept. Supportive care with duloxetine was unsuccessful in this patient. Herein, we report the case.