The series features the opening theme song “Blurry Eyes” by L’Arc~en~Ciel and the ending theme song “Single Bed” by Sharam Q. Plot concept: Karin, a DNA operator from the future, is on a mission to change the course of History by stopping Junta Momonari from becoming the Mega-Playboy who fathered 100 children and led to the overpopulation of the world.
But when Karin shoots him with the wrong DNA-altering bullet, he starts sporadically becoming the Mega-Playboy capable of charming any woman.
Karin must try to restore the situation to normal before the change to Mega-Playboy becomes irreversible.