He's a vampire who prides himself on how little attention he's managed to cause over the years. He's done his best not to arise suspicion to what he is, and he intends to keep it that way. However, when an outsider threatens to spill his secret by spying on him unintentionally, he becomes almost hostile. He was quick to anger anyway, but he feels almost cornered. He doesn't want to hurt this outsider, but he wants to make sure that his secret is safe.