Yashiro Haruka is suffering from insomnia after changing jobs. There's only one reason for this- he's been reunited with Isshiki, the source of his dark past. Yashiro has been having one-night stands with men as a sort of "sleeping pill", but one day, when he gets into an argument, Isshiki saves him, and for some reason, they end up sleeping together. That night, in his dream, the Demon Lord Thomas, who looks just like Isshiki, appears, and he showers him with his extremely sweet affection!? Even though Isshiki treats him coldly in reality, Yashiro is tossed about by the gap between his dreams and reality...