In a world where the Demon King threatens the peace, a young man named Kurt works as a blacksmith. He dreams of becoming a true master of the forge, but for reasons he cannot understand, the only swords he can produce are dull, useless pieces of junk. His coworker, a half-elf named Elsa, constantly mocks his failed creations, but Kurt remains undiscouraged and continues his daily work at the forge.

Everything changes one night when Elsa catches Kurt alone, masturbating to a fantasy. Through this embarrassing accident, they stumble upon a bizarre discovery: if Kurt’s semen is squirted onto a dull sword, the blade transforms and becomes exceptionally sharp. This strange ability soon attracts the attention of Alesia, a female swordsman with a particular kind of interest, who approaches Kurt to learn more about his unusual talent.

The story follows Kurt as he uses his supreme ejaculations to craft the strongest weapons, navigating an erotic and slightly heated bukkake forging fantasy. As the narrative unfolds, Kurt must contend with the demands of those who seek his newfound power while continuing his quest to become a legitimate blacksmith.