Are those kids really human? If it has been five years then it makes no sense for them to have been there. Nobody would go into that danger zone, let alone take their kids.
@Dantrig, probably nothing and just me reaching but, at page 8, the little girl's flock of hair is shaped like a horn in the close-up of her face when she saw the Greed S'es.
Well we did see people getting transported in presumably from the greed world back in chp73, it's conceivable that they're kids who were transported from the other world.
Is this that classic situation from Men in Black 1, where a seemingly weak little girl stand in the middle of an alien encirclement - that bitch is definitely not normal