A nationally approved smartphone should make it possible for a virgin to impregnate a woman unrivaled, but... As part of a global initiative to combat the extremely low birthrate, the government has officially decided to distribute a smartphone equipped with a hypnosis app to men who can impregnate women, which had been on a trial basis. This finally gives Nagata, a dull virgin student, the long-awaited privilege of hypnotizing women for one month. The first person he is matched with is a beautiful girl who has recently transferred to the school, Mitsuki Nagisa. She has a dark side, and whatever the reason, she is definitely notorious for it. Nagata, who is unaware of this, naturally believes that she can hypnotize him, so he approaches her and impregnates her in the name of hypnosis... But at the time, he had no idea that his meeting with her would be the start of a major incident that would follow...