Kouta tries to show off to his friends by telling them a big lie: "I've got the best girlfriend!" He is pressured to meet her, but of course there is no woman who will let him meet her... Then he finds an "AI (artificial intelligence)-equipped humanoid rental girlfriend"!? As time passes, the AI girlfriend's emotions, personality, and even sexual preferences are programmed to suit his tastes. Will he be able to introduce her to his friends as a girlfriend he can be proud of in the one month until the date?
