DNA² - Metamorphosis (Vol. 1)
Sixteen-year-old Junta has a problem: whenever he thinks about a girl  sexually, he throws up. Yet he's destined to become the Mega-Playboy who will  sire 100 sons, who in turn will sire 100 sons apiece, and so on, producing a  population crisis in the future. DNA manipulator Karin arrives from the  future to prevent him from initiating a personal baby boom. She inadvertently  injects him with a compound that periodically transforms the sniveling nerd  into a suave dreamboat--creating the very problem she came to solve. Although  the maladroit geek who somehow wins a crowd of admiring babes is a standard  setup for anime comedies,DNA2(1994) flopped when it aired in Japan.  The biggest problem with the series is that the often nasty violence doesn't  mesh with the romantic farce. (Unrated; suitable for ages 16 and older:  profanity, brief nudity, risqué and gross humor, violence, violence against  women)--Charles Solomon