Killing Begins

In the universe, all humans can become summoners except for a few unlucky ones who don't have an affinity with any element in nature.

Each of these human cultivators, when a breakthrough in their cultivation realms, can enter the Elemental Spirit World to form an official contract with an Elemental Spirit within a limited time.

However, at the same time, these cultivators could form unofficial contracts with the Elemental Spirits and there was no limit to these unofficial contracts.

Generally, most human cultivators are barely able to contract an Elemental Spirit officially and are unable to form unofficial contracts with the other Elemental Spirits as they won't have time.

Nevertheless, there are always exceptions when it comes to geniuses who have an affinity with one or multiple elements of nature.