Nichika Nanakusa is described as "everyone's little sister" with a strong spirit and adept at getting people to spoil her. She has a strong admiration for idols, and would sometimes show off a competitive side that refuses any sort of compromise. She’s in her first year of high school and works part-time at a record store. Her big sister is Hazuki Nanakusa Idol as a member of the unit SHHis,