Link frowns, faintly. He's not sure he entirely understands what she is is talking about - contractors? Pharmaceutical companies? - but he can understand the desire to protect. To fight for those who can't.

"...Yes," he says, his voice heavy. He pauses, and takes another tip of tea. "I'm a knight."

Maybe she doesn't understand what that is, just like how Link doesn't understand contractors. But then, if she's someone who tries to protect others...maybe she does.

"...You have a shield?" She'd need something to work with, for Link to teach her.