The demon world has many strong demons in the world, For example, the 'Seven Deadly Sins' family.
It said that the 'Seven Deadly Sins' family is a descendant of the Seven demon gods who built the demon world.
...And it's true.
Besides the 'Seven Deadly Sins' there are also many strong demons all out in the war.
Despite having so much strength on the demons' side they were losing to humans and they will continue to lose.
The question is...How are humans able to win against demons, who possess such strength?
To find the answer to this demons needed to know more about humans... main humans of the 'Six Big families.'
Before there was 'Seven Big Family' but that was before the downfall of Adele's family.
Anyway, Each family possesses a unique ability or in other words -->talent.
For example, Adele's Ability is related to 'Assassins'.
Ashen's ancestors may also have had talents related to assassination.