A nun- wait, a nun on space? Now that's really weird! But this nun is no other nun - The nun is gifted with a Oath, a oath where he will vowed to forever wield the Oath with his very life. And yes, it's a 'he' not 'she'. Didn't you read the title!? Gosh darn it- (FYI: The book continues! I've found a way to get back into HSR.)