"What is a combat-less scribe doing out here?!" A burnt-out Software Engineer (SE) from a black company dies of overwork, only to be reincarnated into another world with a seemingly useless "trash skill" called [Universal Translation]. Deemed worthless for combat, he is relegated to the castle’s underground archives to work as a slave to paperwork. However, as he deciphers ancient texts day after day, he notices a critical flaw in the reality of this world. —Magic and laws of nature are all controlled by code. Then, the legendary calamity, the "Black Dragon of the Netherworld," attacks the royal capital. When the hero's holy sword and the archmage's grand spells fail, he steps forward to activate the true power of his skill: the ability to rewrite the very code of existence.