And that's being argued as wrong. And I agree it is wrong, because that's explicitly not what Lille is doing. He isn't manipulating space, his shots just penetrate everything and that's that.
We do not always have a perfect ability category that matches a fictional power exactly, but we can still narrow it down by going through the available options.
Without direct evidence, Conceptual Manipulation, Information Manipulation, Logic Manipulation, Subjective Reality, and Mathematical Manipulation should all be dismissed. There is nothing suggesting that the X-Axis is affecting concepts, information, logic, subjective perception, or mathematics.
I also disagree with classifying it as Causality Manipulation. It is not comparable to something like Gáe Bolg from Fate, where the normal order of cause and effect is reversed. The X-Axis does not appear to alter causality; it simply causes the target to be pierced once the attack is activated.
Likewise, Law Manipulation should not be given without some kind of statement or evidence that rules, laws, or principles are being imposed or rewritten.
Reality Warping is broad enough that it could technically cover many abilities, but using it as a catch-all feels too vague without stronger support.
Teleportation also does not make much sense unless we are arguing that the ability is somehow teleporting holes out of people, which seems needlessly convoluted.
Existence Erasure would have been a possible interpretation, but the fact that the attack leaves smoke behind makes that unlikely. If something were truly erased from existence, there would not normally be leftover smoke or physical residue from the affected area.
In my opinion, the three most reasonable classifications are Matter Manipulation, Deconstruction, or Spatial Manipulation. All three can explain the Durability Negation aspect, but unlike Matter Manipulation and Deconstruction, Spatial Manipulation has more direct backing.
First, there is the name itself. “X-Axis” is literally a spatial coordinate. While ability names should not be the sole basis for classification, they can be useful supporting evidence when the mechanics of an ability are vague.
Second, Matter Manipulation and Deconstruction become less likely because the ability is consistently described in terms of “penetration.” If the attack were manipulating or breaking down matter directly, “penetrate” would be an odd choice of wording. Penetration implies that the attack is passing through or piercing the target, not rearranging, dissolving, or decomposing their matter.
On the other hand, across multiple profiles, attacks that ignore distance and durability while simply piercing or slashing through targets are often treated as Spatial Manipulation, even when space is not explicitly mentioned. The X-Axis follows that same general logic: it does not behave like a normal projectile, and it does not overcome durability through raw force.
It affects the target along a defined line or axis, which is much more consistent with a spatial attack.
I am not saying Spatial Manipulation is a perfect classification, but it is the closest and most reasonable fit based on the available evidence. Since Spatial Manipulation is already listed on the profile, it also seems this interpretation has already been discussed and accepted before. Unless there is stronger evidence for another ability type, Spatial Manipulation should remain the safest classification.