A story about a world where everyone is schizophrenic. Everyone has a side personality. Everyone is using compulsory drugs to separate and control the personalities. Apparently going to this kind of lifestyle prevents all wars and violence. The two personalities everyone has are called hypoalter and hyperalter and the prevalent personality is switched every five days.
In addition to its stand-alone volume, this title was published in the follow books. It can be rated independently of any volumes containing it.