Erase

Erase ('Inequivalent Deletion') is the supernatural ability used by Helise's strongest Level A Power User, Number One.

Overall Description
This ability allows the user to completely annihilate it's target without need of physical destruction/damage, making it instantly nonexistent.

One can make things disappear, or at least it looks that way to the naked eye. The objective is completely obliterated and protection is meaningless against it.

Scientific Principles
This ability is based on mathematic principles applied to reality. Taking that everything has a numerical value, and 0 is the state of nonexistence, the user would need the opposite value of the objective in order to delete it.

Example: 

The value of a chair is 2, and to reach 0 (nonexistence) the user would need to use a value of -2, however this power allows the user to reach 0 no matter what value you use, be it 10, -462'3, 6'666...

This makes any kind of protection or defense useless, since even if the defense theorically reduces the power's value to something too little to reach zero, it will still have the same effect.

In short terms, it is the ability to turn anything into nothing without any protection against it.