the seventh realm

There are a total of seven realms making up the universe, holding any life form that is possible to exist. Only three out of the full seven have knowledge of the realms outside it's own borders, but none of the three have attempted to travel outside of their own limits. The human world, or as they like to call their universe, the 'solar system', has yet discover what is beyond their galaxy. That is, until a curious and daring Latrovian prince of the seventh realm visits in hopes of educating his high status family with new knowledge of developments past their own boundaries. Yet, fate intervenes, and an ordinary high school girl catches his eye as he's disguised as an average human adolescent. Will his love be able to pass through the seventh realm?