Mamoru Mikogami is the younger sister of Kaoru Mikogami, the protagonist of Luv Wave. She holds the rank of lieutenant and works in the Metropolitan Police Department’s Security Task Force, where she is involved in investigating the cyber drug known as Ninth Heaven. Her relationship with her brother is marked by emotional distance; she has felt estranged from him ever since he left the family. This sense of separation shapes her personal motivations and interactions within the story, though her professional duties often bring her into the broader conflict surrounding the computer virus XINN and its consequences. As a supporting character, her role primarily revolves around her familial tie to Kaoru and her work as a police officer, but further details on her personality, development, or notable abilities are not well documented in available sources.