The world of the 27th century is a world that early people could not imagine. Many living planets have been discovered in outer space other than the earth. In this era when technological civilization has developed to its peak, the combination of aliens and earthlings is no longer a rare thing. Even so, humans on earth still use the surnames passed down by their ancestors. However, in this technological era, there are also levels. To distinguish, everyone will wear a spar made of a special material on their ears, and the mark of this distinction is on everyone's left ear. The yellow spar represents a person with a distinguished status, such as a royal family or the leader of the ruling class of the United Planets. Others have no right to wear it. The red one represents those who have certain rights but can only act under the orders of nobles and superiors. The white one represents ordinary people. The most noble one is the black spar, which represents the freedom from anyone's jurisdiction, restriction and orders. Its rights are equivalent to those of gods, and it is not subject to domination, and the law is invalid to it. There are not many people who have this kind of special treatment. It can be said that there are very few people. There are no more than three people in the entire universe. The person who wears this crystal stone is chosen by God, which means that this kind of person is born with it in his mother's body.