The story is set in the future on the planet named Amoi which is controlled by a supercomputer named Jupiter. Among the mostly male human population, the light-haired elite class is allowed to temporarily keep the dark-haired "mongrels" as pets. One elite member, Iason, encounters a mongrel named Riki in the slums and decides to take him in. However, Iason keeps Riki longer than it is socially approved, and rumors abound about their possible relationship.

In the future, on a distant star lives a new society. Ruled by a computer system, named Jupiter, men are divided into classes based on their hair color. The Blondies, genetically altered by Jupiter, are the highest class and occupy the capital city of Tanagura. Those with black hair, Mongrels, are forced to live in the slums, Ceres. Iason, the leader of the Blondies, encounters Riki, a mongrel, in the streets of Ceres one night and sets out to own him. 
(Source: June) 
Subtitles for the individual volumes are as follows: 
1: Stranger (&#24112;&#12387;&#12390;&#26469;&#12383;&#30007;) 
2: Destiny (&#21629;&#21205;) 
3: Nightmare (&#21051;&#21360;) 
4: Suggestion (&#26127;&#36855;) 
5: Darkness (&#38263;&#12356;&#22812;) 
6: Metamorphose (&#34909;&#21205;&#12398;&#24341;&#12365;&#37329;)

On planet Amoi, a great society has developed, creating a computerized city called Tanagura, ruled by supercomputer Jupiter. The populace is almost entirely male and is based on hair color; silver and/or blonds are the elitist, ending with dark/black haired as the bottom of society, often known as "mongrels". Blondies keep "pets", young boys kept for a few years, especially made for performing sexual actions for the Blondie's voyeurism entertainment. Blondies aren't suppose to keep pets for long or interact sexually with pets, but one blondie named Iason Mink has kept a pet named Riki, for years and is rumored to sleep with him. Iason refuses to let go of Riki, even with Jupiter's disapproval. Riki fights with his emotions and society problems, unable to decide what to do about his old friend/lover Gai (Guy) and their gang. Iason is obsessed with keeping Riki, and Riki doesn't know what to do; fight against him or surrender to him.

Tags