How Old Is Anya Forger in Konosuba

Please note: The keyword and title provided in your prompt, "how old is Anya Forger in Konosuba," contain a factual error. Anya Forger is a character from the manga and anime series Spy x Family, not Konosuba. Given that all the context research you provided is explicitly about Anya Forger from Spy x Family, I have proceeded with the assumption that the reference to Konosuba was a mistake. Therefore, this article is titled and structured around "...