due to already being active in other bands. He didn't record an album with Casiopea until his appearance in their 20th Anniversary concert in 1999. Minoru Mukaiya (1977–2006) Although Mukaiya was the replacement of Hidehiko Koike, he is considered Casiopea's original keyboardist, since Koike never recorded an album with the band. Since 1985, Minoru Mukaiya has been the Chief Executive Officer of Ongakukan, a company which was originally for recording equipment, but now makes video games (mainly train simulators, such as the titular series Train Simulator). In 1993, A Japanese Macintosh game was released and made by Ongakukan, called "Touch the Music with Casiopea". Most likely, the sound director and music sequencer was Minoru Mukaiya himself. He is currently the producer and founder of Mukaiya Club. Jun Fukamachi (1978–1979, as Live Support Member) Played in some of Casiopea's shows from the time of their live debut until 1979, and is best known for his solo career and tenure in the Japanese fusion band Prism. He was also in charge of the arrangements in Casiopea's first two albums. Kiyomi Otaka (2012–present) Kiyomi Otaka is the only female member of Casiopea. She is one of the two members that had a well-established solo career before joining the group (having been a solo recording artist since 1998). Unlike Mukaiya, she originally started as an organ player, rather than using synthesizers. Bass Tetsuo Sakurai (1976–1989) Casiopea's original Bassist. He and Akira Jimbo left in 1989 to form the drum/bass duo known as Jimsaku (the name is a combination of both member's names, as in "Jimbo and Sakurai".) Sakurai also is the other half of acoustic guitar duo Pegasus, mentioned above. Yoshihiro Naruse (1977–1979 (as Live Support) and 1980–1989 (in other crossovers), 1990–2006, 2012–present) Known to his fans as "Narucho", he is the other member that had an established solo career before joining the band. According to Yamaha's "Event Archives", he was one of the judges of EastWest '77. One of his first solo albums, "Bass Bawl", features Tetsuo Sakurai on a song called "Captain Chaos". Drums Tohru "Rika" Suzuki (1976–1977) Played during their small-time gigs in Yamaha's "EastWest '76" concert. He left afterwards to record with the band Prism (ja) and was replaced by Takashi Sasaki in 1977. However, he would perform with them in crossover shows (likely when the rest of Prism was involved) in 1979, and perform with Noro, Mukaiya and Naruse