It's a secret aphrodisiac that makes any girl fall for you easily. Takushi, who doesn't have the courage to confess his feelings to the girl he likes, decides to use this drug that his brother got hold of. But he's afraid to use it suddenly. First, he gives it to his mother, Yuka, to see how effective it is...Yuka, who is usually a very plain girl, suddenly starts masturbating on the spot! This is bad! It's too effective! Takushi rushes in to stop her. But Yuka, who is high on it, drools and sends passionate glances at Takushi and his brother's crotches...