Also a little background to keep me carried away with this...
Caution story unsuitable for young children >_<
The twins are only a pair of minor characters in the Black Lagoon series, but received an unexpected amount of popularity. According to the story the children were born in Romania, being sold on black market at a young age. They were used to film p*********ic films but somehow the pair survived the abuse by learning to kill. They had since become assassins hired by various criminals against each other. As a result of the abuse, "Hanzel" and "Gretel" are only two identities used by the pair, as they frequently switch between them. (Oh and for this reason the real genders of them are unknown...)
They had since learned that to live in the underworld, they must "kill or be killed". But well, they paid their price for living that way, neither of them had good endings -- The "Hanzel" was shot by a sniper and left to bleed to death, while "Gretel" attempted to escape via port, but was later gunned down by a hitman.
--Enough typing, Lex is back to revision...