[He tenses, but at the lack of a retort, his shoulders slacken a bit.]

Ah, sorry. [He wants to appear confident despite all of this fear, so that's the sort of air he exudes, smiling a little sheepishly, politely, at the comment.] It's dark and there are strange creatures coming out of nowhere, so when I heard something approaching, I thought I'd have to strike for my life. Woops~.