The World's Strongest Rearguard

Arihito Atobe was an overworked office employee whose relentless grind ultimately cost him his life in a fatal accident. However, death is not the end of his story. He awakens in Labyrinth Country, a treacherous realm defined by its perilous dungeons and monster-filled depths. Reborn as a Seeker—an adventurer tasked with exploring these deadly labyrinths—Arihito discovers he possesses an extraordinarily rare class known as Rearguard. Far from being a mere backup role, this unique designation makes him a versatile powerhouse capable of seamlessly shifting between devastating offensive strikes, impenetrable defense, and restorative healing magic. Determined to survive and thrive in this unforgiving new world, Arihito quickly forms alliances with unexpected companions. His growing party includes a fierce demi-human mercenary and even his former boss, who has also found herself transported into this dangerous reality. Together, they plunge into the most lethal dungeons the country has to offer, battling monstrous threats while steadily climbing the ranks of the Seeker hierarchy. As Arihito masters the full potential of his abilities, he proves that true strength lies in unwavering support. The thrilling adventure of the world's most powerful Rearguard has only just begun.