Kazuki Ryouma, a socially awkward delivery driver, gains a mysterious supernatural power called the "Libido System," which allows him to manipulate the desires of the women around him. As he begins to seduce his lonely, married neighbor, Fujiko, Ryouma finds himself caught in a dangerous game of attraction, power, and manipulation. Meanwhile, his best friend's girlfriend, Ayaka, grows suspicious of his newfound confidence. Navigating lust, control, and temptation, Ryouma's journey takes him down a path where his desires may come with dark consequences.