He was the director of the Japan Songwriters Association (J-scat).
Kobayashi served as the first president of the Dai Nihon Piman-sha Renmei (Dai Pi Ren).
Asei also composed the music for the 1990 Famicom video game Niji no Silkroad.
A soundtrack CD was later released titled Rainbow Silkroad Image Album WINDY ROAD.
He also composed The TV Asahi song in 1977 when the television station changed its name to its current name.