There are thirteen realms in this current world. They are known as: Body-Refining Realm, Bone-Refining Realm, Blood-Refining Realm, Core-Forming Realm, Earth Realm, Sky Realm, Cloud Realm, Spirit Realm, True Spirit Realm, Mystical Realm, Celestial Realm, Legendary Realm and finally the Mythical Realm!

Each realm has 9 ranks!

Skills have 10 grades. They are known as: Common, Uncommon, Rare, Super Rare, Epic, Legendary, Mysterious, True Mysterious, Rainbow and True Rainbow.

Weapons and gear also follow the same grades as skills.

Pills have five grades: Earth grade, Sky grade, Spirit grade, Heaven grade and Universal grade.

When people step into the Core-Forming Realm they form their mana core.

When they step into Spirit Realm their cores evolve into Spirit Cores. They are three types of spirit cores. The normal remains as Spirit Cores that's for humans the Spirit Cores for monsters like Jay and his bros turn into Monster Cores and the cores for demi humans turn into False Monster Cores.

Monster cores gain a new type of energy called Beast Energy or Beast Mana. While False Monster Cores only gain a wisp of Beast Mana. Spirit Cores gain an energy called True Spirit energy/mana.

When they step into True Spirit Realm they will form something called Bloodline Spirits.

The strength and quality of the bloodline determines the strength and quality of the bloodline spirits.

The spirits have the same ranking system as pills.