"Based on an original idea by Elisabetta Dami"--Title page verso.
Thea Stilton is a book character who's the attributed author. She is the younger sister of Geronimo Stilton, the fictional author of a related series.
Summary
Thea Stilton and her sisters journey to the land of Minwa, a realm linked to the legends of Japan and wrapped in mysteries and enchantments, to discover why the realm's special lotus flowers are disappearing--and why their diappearance seems to be threatening the whole land.