Two and a half years after the dark day of the Lost JuLai, Meryl Stryfe roams in the desert wilderness of Noman's Land alongside her younger assistant, Milly Thompson. She still pursues Vash the Stampede, the culprit behind the cataclysmic events that took the lives of 90 percent of the JuLai city population. Vash, also referred to as the Humanoid Typhoon, is now sought after for 60 billion double dollars—the largest bounty in the history of the planet. In a backwater town of Noman's Land, an apathetic Vash has been rescued and cared for by Hoppered the Gauntlet, a man who covers his mutilated body with armor. But Hoppered's secluded life is abruptly interrupted by the arrival of young Jessica seeking help for her endangered home.

Determined to pursue his glorious childhood dreams, 30-year-old Rick Gladiatol, a modest clerk in the adventurers' guild, is offered a once-in-a-lifetime opportunity after he fatefully encounters the dark elf Reanette Elfelt. Reanette happens to be an elite adventurer of the legendary party Orichalcum Fist, whose members welcome Rick under the condition that he follow a Spartan training. Two years later, Rick is finally ready to take the E-Rank exam officially qualifying him as an adventurer. However, raw magical power can only be developed until one turns 20. As such, Rick faces the general hostility of fellow participants and examiners alike, leaving him no choice but to show the world that his hellish training has turned him into an invincible warrior.

Seeking the key to the elixir of immortality, the group arrives at the fortress of the island's monstrous ruler, the Tensen. To survive and escape the island, cooperation becomes essential—regardless of whether one is a condemned criminal or an executioner. Meanwhile, the shogunate orders additional landings on the island of the Immortal Realm, led by Shugen Yamada Asayemon. Among them are the Ishigakure clan, who share a past with Gabimaru. Desperate to find the elixir and escape the island, Gabimaru and his companions face the Tensen in a battle that escalates into an all-out confrontation between humans and immortals! (Source: Twin Engine, edited)

In a world where the title of Hero is treated as a punishment rather than an honor, the worst criminals are sentenced to the front lines of an endless war against the Demon Lords. Branded as Heroes, they are forced into military service without even the mercy of death, condemned to be revived and sent back into battle forever. Among them is Xylo Forbartz, once a respected commander of the Holy Knights. Now the leader of Penal Hero Unit 9004, he commands a squad of convicts considered expendable by the very nation they serve. During one chaotic mission, he encounters Teoritta, a living weapon known as a Goddess, whose presence threatens to shift the balance of both the war and his own fate. As the unit is sent on increasingly dangerous operations, Xylo must balance leading his unit, surviving the battles he finds himself in, and uncovering the truth behind his own sentencing.