Ascension

Ascension is a ability possessed by Zero. It is an improvement ("growth") ability which allows him to rapidly improve his fighting performance.

Description
This ability allows user to imprint on thier experiences; when not growing in power level, energy, physical strength or conditioning, it allows them to adapt and instantly improve their performance through refined tactics and skillset.

According to Kilia, it increases Zero's Strength and Magic ability considerably, allowing him to steadily evolve his power and efficiency with each exchange as he continues to fight an opponent of rivaling or greater power.

When user has sustained a great amount of damage, It increases user's power with twice the power; therefore, the stronger the opponent's powers are, the stronger the user's power becomes when he receives damage from opponents.

First drawback is that user can only sustains the sheer power of the ability depend on their conditions or so before their body breaks down from pushing so far beyond their natural limits.The time limit ending is shown that the Zero's body that will cause him severe pain and eventually force him into unconsciousness.

In more severe cases, Kilia also noted it could potentially kill the user however unlike Zero, he has advantage of his supernatural stamina and can't be killed even beyond his limits because of his status however have sensation of pain while fighting his opponents also limited time and magic.