Tenkai Rikujou!

The world of earth, and the world of heaven, seprated by the clouds. Rinne is one of those who lives in heaven. Then a wild fire that no one can put out in heaven, where it never rains, happens. Rinne is determined to put it out, but accidently trips and falls to Earth. The fire is still going strong in heaven, and Rinne has to figure out how to put it out.