[He's pretty clearly uncomfortable, but he doesn't want to be rude, either.]

...my world is similar. You knew about demons and that Inosuke and I are slayers, so you probably understand mostly where that leads. Demons eat humans, because they're nutrient-rich, so occupationally... We slay them to save humans. [He stops there, trying to decide if he wants to explain the rest of his moral standing on the topic.]