The Machine Girl (2008)

Japanese schoolgirl Ami is upset when the Yakuza kill her brother and chop off her arm.

Revenge is quick in coming when Ami meets a couple that are keen to help her…
“It must be pretty tough to fight with just one arm. Don’t worry, I can design you a new one. One made of steel”, says the husband who makes her a prosthetic machine gun arm.

Does her plan to exact revenge on the Yakuza upset this couple? Apparently not, as the wife justifies the upcoming violence, “If you can think of a good way of getting revenge without killing people that desperately deserve it, let me know”.
“Okay, let’s kill, kill them all”, replies our heroine with perhaps a little more glee than is healthy.

As the story unwinds or, more accurately, unhinges we experience Ninjas in tracksuits, a yakuza that looks like a giant garden gnome, ‘Super power bullets’, a drill bra, Japanese fetishes (school uniforms, white panties, and faux lesbianism), and a lot of dismemberment and spurting blood. A LOT of dismemberment and spurting blood. The English dubbing helps to make it even more entertaining.

This may be the greatest Japanese movie ever.