I purchased this dvd instore and it was a Steelbook Its not advertised as a steelbook online put im sure it is because it an exclusive to hmv.
It's extreme Japanese cinema at its bloody best as a sexy schoolgirl gets transformed (literally) into a vicious killing machine!
Ami's world comes crashing down when her brother and his friend are killed by ruthless bullies. When she goes after them to get revenge she quickly realises she is in over her head as they are associated with a sinister ninja yakuza family. Barely surviving their encounter Ami manages to escape but has paid the price with her left arm. After seeking refuge with kindly garage mechanics she is fitted with a high-powered machine gun in place of an arm. She then teams up with the chainsaw-wielding mother of her brother's slain friend and together they unleash a non-stop murderous rampage against their equally adorned ninja enemies.