"The Mustache Island"

"The Mustache Island" is a book about an island shaped like a mustache. And when a tribe called enters the island, they find out about the ancient powers of the mustache, they call themselves the "Mustaleni" and practice mustache-culture. But pirates find out about the island's riches and battle the Mustaleni for it. When the Mustaleni win, they finally live in peace. Then hundreds of years later, explorers come and make peace with the ancient tribe