Since the invasion of the human kingdom began, the entire demon kingdom has been mobilized for the war, and the amount of resources and supplies required has been unstoppable, resulting in a chronic problem of intermittent power and energy shortages. To compensate for this ever-increasing demand for electricity, factories were built throughout the country to convert semen directly into electricity. However, because all demon's people resources were devoted to the war effort, there was a continuous shortage of factory supervisors and other field workers. To make up for the shortage, the human POWs who were captured during the war were conscripted, but one factory did not meet its monthly quota, so the human superintendent's semen was squeezed to make up for the shortage.

I like to think that, contrary to the author's note, the humans and demons are working together (perhaps to oppose some alien threat). It'd explain why she's so kind as to hold his hands and comfort him.

Base +4