In the world of magic and witchcraft there is a legend that when in ancient times when all races where living together in harmony a crack appeared in world and otherworldly beings began to destroy everything and started to rule the world,
all races came to fight together but they discovered that they have no power against the otherworldly beings because spells and magic don't work against them, when everyone realised that they fell in despair and watched the world being destroyed by them.
when goddess hectae and other six God's saw this they decided to work together and each of them choose a person regardless of race based on their mind body and energy and granted them spell and knowledge of magic beyond the times so that they can fight the otherworldly beings
but they also put forward a condition that all the seven choosen ones will only choose a special person to inherit the power based on their mind body and energy and if they ever violated the vow they will face unimaginable consequences
so then the world entered a state of chaos where fight between choose ones and otherworldly beings became extreme many people died some sacrificed or some killed the fight between them lasted for 9 years and at tenth year they finally signed a contract that they will not do anything as they get their own land they will not interfere with each and if any side violated this rule they will face terrifying consequences and finally the world came to a temporary state of peace