Sep.1983
Debut! / Vo.Shigeru G.Hiroshi B.Takashi Dr.Hiromichi
Oct.1983
Demo tape release.
Dec.1983
Member change / Vo.Shigeru G.Nagi B.Takashi Dr.Hiromichi
Apr.1984
"Systema" release.
Oct.1984
"Hold up omunibus"(V.A) release.
Dec.1984
"Systema2" release.
Dec31984
Band break up.
Jul.1985
Band restart / Vo.Shigeru G.Takeshi B.You Dr.Hiromichi
Jun.1986
"Flash Back" release.
Sep.1986
"Thrash 'til death"(V.A) release.
?.1987
"消毒GIG"(V.A) release.
July.1987
Member change / Vo.Shigeru G.Takeshi B.You Dr.Koba
Jul.1987
"Final insider/Lucky time" release.
?.1987
"My meat's your poison"(V.A) release.
Oct.1987
"Stimulate" release.
?.1988
"病原体/Virus"(V.A) release.
Feb.1988
Member change / Vo.Shigeru G.Hirame B.Kenken Dr.Koba
Mar-Apr.1988
Back drop japan tour
Jul.1988
"ãƒãƒ©ãƒžã‚/Gratis 7" release.
Aug.1988
Member change / Vo.Shigeru G.Zigyaku B.Kenken Dr.Koba
?.1988
"Complete death" release.
Oct.1988
Band break up.
Sep.2007
"Systemania 1""Systemania 2" release.
Feb.2008
Band restart / Vo.Shigeru G.Takeshi B.Takashi Dr.Koba
Apr-May.2008
Back drop world tour
Sep.2008
"Back drop world tour DVD" release.