It has some comedy and a good amount of romance.
Unlike all the other romance, the main character is not a retard but actually acts/becomes a man as the series goes to an end.
The first few eps just shows what happens and everything is pretty light until the last 4 eps where things turn serious and Tatsuya develops into a man.
There isn't really a story in the anime but just eps of tatsuya and Feena growing closer together.
The art is pretty good and for a good 12 ep series, this was really enjoyable.
A bit about the anime
The main character met the princess at an early age but he doesn't know it was the Princess. The princess goes to the Earth for a "homestay" (which is where the princess lives in a house at Earth) and of course the homestay is at Tatsuya's house. His older sister is the president assistant so that's why I'm guessing. The princess notices that Tatsuya was the child she met a long time ago but Tatsuya doesn't realize.
After this, the story goes from there and they start becoming closer.
