Drifters manga omnibus volume 1 collects volumes 1-3 and features story and art by Kohta Hirano, the creator of Hellsing.

Warriors and warlords from Earth's history—"Drifters"—are transported to an alien world and employed to help the non-human races defend themselves in a worldwide civil war with legions of monsters led by the malefic Black King threatening the annihilation of both human and non-human races. Included in the menagerie of fighters from Earth are samurai warrior Shimazu Toyohisa, Joan of Arc, and Hitler! Drifters is a howling tornado of all-out action and staggering imagination.

Drifters manga omnibus volume 2 collects volumes 4-6 and features story and art by Kohta Hirano, the creator of Hellsing.

At the eye of the storm is the Black King who, desiring more than land and resources, is uniting the non-human races for a single purpose—the genocide of humanity.