Collects Okko: The Cycle of Earth #1-4! Okko and his faithful companions arrive at the City of the Blasting Powder. While seeking a guide to help them cross the perilous chain of the seven monasteries, they learn of strange events in the mountains. And so Okko and his companions seek the Forbidden Libraries of the Eighth Monastery on the Roof of the World, and the ancient powers of the earth demand a blood sacrifice when awoken.