Many years have passed since the stellar expansion of Mankind began. The created association called the "League of Sovereign Worlds" included about forty thousand inhabited planets inhabited by representatives of three races. Earthlings and their descendants made up about 85% of the population of the League, the shares of Excitons and Diya were 11% and 4%, respectively. Excitons were humanoids with an average height of 140-160 cm and with pointed (like elves) ears, four fingers and toes and huge, half-eyed pupils. Their skin wore a slightly grey hue and otherwise they were like people...