This is a keychain for "Mi-Ke," a music unit produced by B.B.QUEENS. The unit name "Mi-Ke" is derived from the initials of the three members' names (Mizuiro, Keiko, and Mami). The members were Haruka Murakami, Keiko Utoku, and Mami Watanabe. They were active in the early 1990s and are known for hit songs such as "Omoide no Kujukuri Hama." This keychain is likely a fan item from that time. Thank you for viewing.