[The pauses are probably thinking; he might be prone to rambling but he wasn't stupid. Weighing these things is a matter of course. Besides which, Xemnas is busy trying to place where he might have heard her before. Some passing foreign world?]

One may not wield a weapon, but one may set their ... pokemon, on another individual and let it do the damage instead? What strange reasoning this world has. The pokemon becomes the weapon. It is no different than wielding a blade.