[ Only one of them is allowed to be loud, brash, and talkative, and it is not Kotetsu. He narrows his eyes before remembering how ill-equipped he is at the moment to show him his might. Being stripped of his magecraft is inconvenient, and even his cane had been absent from his person upon arrival, robbing him of the chance to bring it down on this miscreant's head.

In lieu of that, he has the sheer intensity of his naked aura with which to intimidate this man, which he's sure is manifesting itself around him with overwhelming brilliance as they speak, but he does deign to answer the question because it's an important one. ]

Did you not know that all worlds have rotted at the core? Why else would I be summoned if not to be their savior and their savlation? Destruction and rebirth and destruction and rebirth– this one stands on its last legs, and upon its ashes will I rebuild my new kingdom.

[ It's the only suitable conclusion for why he's here at all. Nothing less than that would require his attention. ]