Looking for Recommendations, I’m Suffering From a Book Drought. Fanfiction, Anime, Historical, or Original Novels Are All Fine

Looking for books like *The Allspark, It's Just a Job*. Please recommend a well-written novel to get me through this reading slump, with characters whose actions make sense and don't feel out of character. The fanfic premise should stay faithful to the original. No harem or brainless characters, and if there's a pairing, it should make sense.