I'll be quick with this review. If you're looking for age-gap romance, you're in the right place. If you're looking for something other than that, I suggest you look elsewhere. The story is very plain and simple. It mainly focuses on the relationship between FMC and her bodyguard. Other characters are mentioned but it doesn't go in depth. Character development? Almost non-existent. The animation is average at best since it focuses only on looks and not the movement, background, etc. Overall, "Ojou to Banken-kun" is a good romance anime. Again, I recommend this anime if you're looking for an age-gap romance or just romance.