Katsuya freezes mid-bite and gives Sammy a long look. All three of them are staring at him, Sammy as though he's grown a second head. And considering the bits Katsuya's seen on him before he almost wonders if he should be offended.

"I don't change, no. It's a summons, of a sort." A physical manifestation of his willpower and strength of his soul. But that sounds awfully philosophical to explain to a child, so...excuse him while he hides behind his going to be empty glass of wine for a moment.

"It's a powerful tool I use to protect people. Mostly back in my own world." Again, given the makeup of the house Katsuya's loathe to admit that his first and foremost hobby for the last several years has been exterminating demons and monsters.