The Tianshiyuan Division

In the future, several planets in the Milky Way have forged mutually beneficial partnerships. Earth is among the very best of them. Its remarkable achievements are thanks to an organization called the “Center for Research and Resolution of Various Cosmic Affairs,” abbreviated as the “Affairs Research Center” or simply the “Center.”

The organization seems to be conducting some kind of secret operation, and Lin Su is one of its covert members. An alien stationed on Earth, he lives like an ordinary human every day, until he receives a mission that will take him on an interstellar voyage...

Note: The personalities of the zodiacal species from these planets have nothing to do with the traits described in 21st-century astrology, horoscopes, and similar beliefs.