The single "Otoko" was released in 1993, featuring Ruriko Kubō's signature blend of pop and R&B. It was released on Sony Music Direct (Japan) Inc.
- The single "Otoko" was released on September 22, 1993.
- The release genre is listed as pop and R&B.
- The single was released by Sony Music Direct (Japan) Inc.
Ruriko Kubō is a Japanese singer, songwriter, and producer. She debuted in 1991 and has since released numerous singles and albums across pop and R&B genres.
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