※Note: The comic adaptation was released on the GauGau app on June 11, 2024!

Louis Alzeid, an old man adventurer, continued to make earnest efforts but couldn't gain any levels and was constantly mocked by people.

Likewise, rookie adventurer Alicia Carfey joined the guild dreaming of becoming the strongest, only to be relegated to the lowest rank.

Both of them were continuously ridiculed by their colleagues as the weakest adventurers.

Then one day, a monster suddenly attacks the Imperial Capital.

Though Louis possessed neither skill nor popularity, he nonetheless carried out the work he could do. As a result, he somehow acquired a mysterious skill called 《Unconditional Victory》.

Armed with this new power, Louis learns that the neighboring 《Euras Republic》 is making suspicious moves—and taking his expulsion from the guild as an opportunity, he begins his own investigation.

In the process, he is confronted with the inescapable fate of the world.

And moreover, that his adversary is so formidable that even his ultimate skill 《Unconditional Victory》 proves insufficient.

Why did he suddenly acquire such a skill?

What exactly does 《Unconditional Victory》 even mean?

What happened in the war between the Empire and the Republic two thousand years ago?

—This is the story of Louis, a rock-bottom old man adventurer, who, even when confronted with a cruel fate, still struggles and carves out a future.