Nine songs, nine minutes. Killer blast of Japanese hardcore!! Or thrashcore, crossover... S.O.B. released Leave Me Alone on this day in 1986.
Early D.R.I. is a fair comparison for the aggression and energy. They had some influence on the death metal scene too and released a split with NAPALM DEATH in 1989. The metal influences were then increasingly incorporated into their own sound. By the early 90s (Gates of Doom LP) their sound was solid death/thrash metal.