The name 'Yaen' originates from the Hebrew word meaning 'ostrich'. In Japanese, it is written as 野猿, which translates to 'Wild Monkey'. This name was adopted by a Japanese pop group formed by Takaaki Ishibashi and Noritake Kinashi, members of the comedy duo The Tunnels, along with nine staff members from their television variety show. The group was active from 1998 to 2001, releasing music that achieved significant popularity in Japan.