Chikayo Nagashima is a Japanese professional wrestler. She started her career in 1995, working for the Gaea Japan promotion, where she became a one-time AAAW Single Champion and a record five-time AAAW Tag Team Champion. She was also notably one of the four founding members of the Oz Academy stable. Following the folding of Gaea Japan in 2005, Nagashima affiliated herself with Oz Academy, now a full-time promotion, where she has become a three-time Oz Academy Tag Team Champion and a one-time Oz Academy Openweight Champion, holding the record for the longest reign in the title's history. Nagashima remained with Oz Academy until August 2015, after which she became a freelancer.

Mayumi Ozaki is a Japanese professional wrestler. She is currently working for Oz Academy.