After the Demon Sword Amade left with a host of Nightmare Spirits, the entire Amade City, and even the whole domain, fell into an undefended state.
This wasn't because they were not cautious; on the contrary, Amade's command for all the Nightmare creatures to join the expedition was in itself a cautious act.
However, he could never have imagined the existence of someone like Richard.
To the eyes of the Nightmare creatures, Richard's splitting technique was utterly inconceivable.
Between the Nightmare creatures, there are no distinctions of sex, nor do they reproduce; all Nightmare creatures grow from basic Nightmare Spirits.
How could one Nightmare creature possibly split and create another Nightmare creature?
Moreover, even if another Nightmare creature was produced, the fact that Nightmare creatures lack souls meant they couldn't split off another, but only create a new creature of the same kind.
