The story has everything I like, romance, action, comedy, fantasy, strong leads. But alas, it lacks everything.

Romance: the ML, FL chemistry has good vibes, but romance is little and dull.
Action: good sword fights, but no fight was an intense or a thrilling one, as all fights were training for ml. He didnt fight a single serious villain in all of 20 episodes.
Comedy: can't complain on this.
Fantasy: Doesn't hold a candle to animes I've watched. No aspect of it was new.
Leads: Entire story builds on premise that FL is weak and hunted. She becomes strong in finale, the episode that does only to build premise for next season.