In Weren society, the Unterweren are the ‘Sub People’, the souls of Weren exiled from Weren bodies because of shame and dishonor. This is how the Weren describe all non-Weren races.
Unterweren can not reach Peace – their only path to Peace Eternal is to be killed in battle by a Weren, in which case they will be re-born as a Weren – if they lived enough lives with enough honor to make penance for their original banishment. Since an Unterweren soul is so far from Peace, it is the highest calling for Weren to kill Unterweren. What has essentially developed is a religious requirement that Weren commit complete and universal Xenocide: the full annihilation of every species other than the Weren.