The Burning [DVD] [2008]

A sibling reunion goes up in flames when a woman dying from an inoperable brain tumor decides to say goodbye to her long lost sister, and the pair quickly remember why they have been estranged for so many years. Minako doesn't have long to live, and before she goes, she longs to bid her twin sister farewell. But these aren't your typical twins, because when they come together they each transform into hyper-destructive pyromaniacs. Thirteen years ago, they were separated to protect themselves and everyone around them. But now they've come back together, and the flames of their fury will glow hotter than ever before.~Jason Buchanan