Ark//wind Saga

Summary
The world of Ark//Wind Saga is an isekai world where the children of destiny must fight for their own survival in a new and dangerous world. They must gain the favor  of monster girl like familiars and establish a soul resonance with them in order to use their powers to defeat the children of the apocalypse who want to destroy the world with their own familiars by ushering in the Great Calamity. As the series progresses more secrets are unveiled about the world that the children of destiny are summoned into including the nature of the familiars and the goddess that summoned them to this world which will make them question everything they know about the world they've arrived in, their role in this new world as the chosen heroes and themselves.

The Power of the Verse
This verse is moderately powerful in the beginning with the Children of Destiny having the ability to summon city destroying familiars very early on, furthermore each of the familiars that they summon are able to augment their abilities with various hax such as self-healing, soul manipulation, time manipuation, mind manipulation and partial possession. Also each of Children of Destiny and the Children of the Apocalypse have the ability of invocation achieve through soul resonance to essentially fuse with their familiars.

The Children of Destiny are actually rather weak without their familiars and often have to resort to outsmarting the entities that are to become their familiars. Despite this, they are still on the level of skilled warriors and are quite proficient with their weapon of choice they are however no stronger than peak human. The only exception to this would be the white mage who must use significant time in the preparation of rituals, the drawing of sigils, and the imbuing of intention to perform even the simplest elemental spells. There is one notable familiar which the white mage has access to which is the fox princess who has the ability to enter into a pocket universe outside of time where the fox princess can control how the rate of time flows in the outside world compared to her own pocket dimension, they cannot however affect the world the plot resides in when time is stopped as they need to be within the area surrounded by the tori gates created. The ritual to enter this pocket universe has a long preparation time during which the fox princess is extemely vulnerable so it is unwise to use in the heat of battle.

The Strongest Characters that are hinted to exist within this universe from the start are universals this includes the original Hero King, the adventurers who aided him and his familiars.

Towards the end of the series there is a massive spike in power due to the fact that both the world ending calamity and the goddess herself are both multiversal level with the abilty to create and destroy multiple worlds including the world that the Children of Destiny and the Children of the Apocalypse originally hail from a fictional version of our own familiar 10-dimensional universe.

Note: The Calamity is something shadowy that exists outside of even the multiverse that the goddess controls and is said to come from the void. Eternity or The Eternal Dream is something which gives power to both The Goddess and the Calamity is of an unknown tier it however is more of a force within the universe similar to Akasha or The Root within the Nasuverse, if it were assigned a tier it would be tier 0 and it's presence within the universe is represented as a twisting mass of unseen vines and thorns it does not have a will and cannot be destroyed.