Rika Nishimura was a Japanese model and actress active from approximately 11 to 16 years of age, gaining fame through the work of photographer Yasushi Rikitake

The keyword refers to one of the most controversial and significant cases in the history of Japanese photography and child welfare law. It centers on the 1993 publication of the photobook Six Years , featuring Rika Nishimura, and its subsequent legal fallout in 1998 (often associated with the "58" in search queries, referring to the age of the photographer or specific legal statutes at the time).