1-nen no Gakushu - Junichi Ikeda (August 1988-March 1991) 2-nen no Gakushu - Masatoshi Nakajima (August 1988-March 1991), Keizaburo Kuwahara (April 1991-March 1992) 3-nen no Gakushu - Morihiko Ishikawa (August 1988-March 1991), Masatoshi Nakajima (April 1991-March 1992) 4-nen no Gakushu - Yoshiaki Tsuhara (August 1988-March 1991), Morihiko Ishikawa (April 1991-March 1992) 5-nen no Gakushu -Shotaro Ishinomori (April 1989-March 1991), Yoshiaki Tsuhara (April 1991-March 1992) 6-nen no Gakushu - Gosaku Ota (August 1988-March 1991), Shotaro Ishinomori (April 1991-March 1992)