A two-fisted tale about desperadoes and the marshals who hunt them! From Boichi, the artist of Dr. Stone!

The age of desperados is upon the wild west! For millennia, the vast desert has been run by outlaws, brigands, and vagrants—thwarted only by the badges of the U.S. marshals. Ride along with Jimmu Godspeed as he travels the wild frontier in search of the legendary power of the Marshal King!

Now equipped with Excalibur, the King Magnum, Jimmu demands to graduate from the Western U.S. Training Institute! But the only way Jimmu is walking out with a U.S. Marshal badge is by winning against the principal, the famed Fair Lady. Will he be able to hold his own against the woman who singlehandedly killed 10,000 desperados?