Ken Ai is a civilian administrations officer who works for the ANBU. Besides handling logistical and administrative paperwork, she also helps in conducting investigations for ANBU, be it considering internal affairs or regarding a person of interest. Originally hailing from a small civilian town in the Land of Fire, she moved to to Konohagakure nearly a decade ago in order to start a new era in her life. She is currently in a relationship with Hatake Kakashi.