Yuurei Ryokoudairiten

At her grandmothers funeral 5 years ago Touno Mariko saw her grandmothers ghost. Ever since then she has been able to see ghosts. One day when visiting her grandmother she accidentally angers an old spirit and is saved by Takenaka Masato. Masato works for a spirit travel agency, which is exactly what it sounds like. As fate would have it Mariko now has to work for this agency to pay off her debt to the angered spirit.