A weapon that perfectly fits oneself is not only capable of perceiving more power of the twelve-stage but can also deeply explore the might of this ultimate weapon.
Unfortunately.
The ultimate weapon of the Four Divine Kings, along with the departure of 'White Paper,' was completely lost in the Two-dimensional World, resulting in the loss of core spiritual will.
This caused the Four Divine Kings to fall from the top echelon of Level Eleven Perfect legendary beings in one fell swoop.
...
There's no need to elaborate on how an ultimate weapon enhances combat capabilities.
Even if a Level Eleven Perfect legendary being gets an ultimate weapon that is not quite suitable for them,
when fully activated, it can still unleash the might of hundreds of times its battle strength. The activation here relies solely on one's own strength without any backups from a transcendent being left in the ultimate weapon.