Kosuke and Aizawa are childhood friends and have been best friends for a long time. When she meets Aizawa, who moved to Tokyo after graduation, for the first time in several years, she is surprised to find that she has been reborn as a woman from a man. Sara confesses that she has loved Kosuke for a long time, and shows him his dick in the bathroom, forcing him to suck his erect dick. Even though Kousuke doesn't like it, he gets an erection and ends up being sucked even more.