Number 12 Looks Just Like You

In a future society, all young adults go through a process known as "the Transformation", in which each person's body is changed to a physically attractive design chosen from a selection of numbered models. The process also slows deterioration due to age and confers immunity to disease, extending human lifespans, as well as making unspecified psychological corrections. Due to the overwhelming popularity of female model 12 and male model 17, all adults wear name badges to avoid confusion.